dt-bindings: display: Add SPI peripheral schema to SPI based displays

With 'unevaluatedProperties' support enabled, several SPI based display
binding examples have warnings:

Documentation/devicetree/bindings/display/panel/samsung,ld9040.example.dt.yaml: lcd@0: Unevaluated properties are not allowed ('#address-cells', '#size-cells', 'spi-max-frequency', 'spi-cpol', 'spi-cpha' were unexpected)
Documentation/devicetree/bindings/display/panel/kingdisplay,kd035g6-54nt.example.dt.yaml: panel@0: Unevaluated properties are not allowed ('spi-max-frequency', 'spi-3wire' were unexpected)
Documentation/devicetree/bindings/display/panel/ilitek,ili9322.example.dt.yaml: display@0: Unevaluated properties are not allowed ('reg' was unexpected)
Documentation/devicetree/bindings/display/panel/samsung,s6e63m0.example.dt.yaml: display@0: Unevaluated properties are not allowed ('spi-max-frequency' was unexpected)
Documentation/devicetree/bindings/display/panel/abt,y030xx067a.example.dt.yaml: panel@0: Unevaluated properties are not allowed ('spi-max-frequency' was unexpected)
Documentation/devicetree/bindings/display/panel/sony,acx565akm.example.dt.yaml: panel@2: Unevaluated properties are not allowed ('spi-max-frequency', 'reg' were unexpected)
Documentation/devicetree/bindings/display/panel/tpo,td.example.dt.yaml: panel@0: Unevaluated properties are not allowed ('spi-max-frequency', 'spi-cpol', 'spi-cpha' were unexpected)
Documentation/devicetree/bindings/display/panel/lgphilips,lb035q02.example.dt.yaml: panel@0: Unevaluated properties are not allowed ('reg', 'spi-max-frequency', 'spi-cpol', 'spi-cpha' were unexpected)
Documentation/devicetree/bindings/display/panel/innolux,ej030na.example.dt.yaml: panel@0: Unevaluated properties are not allowed ('spi-max-frequency' was unexpected)
Documentation/devicetree/bindings/display/panel/sitronix,st7789v.example.dt.yaml: panel@0: Unevaluated properties are not allowed ('spi-max-frequency', 'spi-cpol', 'spi-cpha' were unexpected)

Fix all of these by adding a reference to spi-peripheral-props.yaml.
With this, the description that the binding must follow
spi-controller.yaml is both a bit out of date and redundant, so remove
it.
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Paul Cercueil <paul@crapouillou.net>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://lore.kernel.org/r/20211221125209.1195932-1-robh@kernel.org

Documentation/devicetree/bindings/display/panel/abt,y030xx067a.yaml

@@ -6,15 +6,12 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Asia Better Technology 3.0" (320x480 pixels) 24-bit IPS LCD panel
 
-description: |
-  The panel must obey the rules for a SPI slave device as specified in
-  spi/spi-controller.yaml
-
 maintainers:
   - Paul Cercueil <paul@crapouillou.net>
 
 allOf:
   - $ref: panel-common.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/display/panel/ilitek,ili9322.yaml

@@ -15,11 +15,9 @@ description: |
   960 TFT source driver pins and 240 TFT gate driver pins, VCOM, VCOML and
   VCOMH outputs.
 
-  The panel must obey the rules for a SPI slave device as specified in
-  spi/spi-controller.yaml
-
 allOf:
   - $ref: panel-common.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/display/panel/innolux,ej030na.yaml

@@ -6,15 +6,12 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Innolux EJ030NA 3.0" (320x480 pixels) 24-bit TFT LCD panel
 
-description: |
-  The panel must obey the rules for a SPI slave device as specified in
-  spi/spi-controller.yaml
-
 maintainers:
   - Paul Cercueil <paul@crapouillou.net>
 
 allOf:
   - $ref: panel-common.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/display/panel/kingdisplay,kd035g6-54nt.yaml

@@ -6,15 +6,12 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: King Display KD035G6-54NT 3.5" (320x240 pixels) 24-bit TFT LCD panel
 
-description: |
-  The panel must obey the rules for a SPI slave device as specified in
-  spi/spi-controller.yaml
-
 maintainers:
   - Paul Cercueil <paul@crapouillou.net>
 
 allOf:
   - $ref: panel-common.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/display/panel/lgphilips,lb035q02.yaml

@@ -6,15 +6,12 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: LG.Philips LB035Q02 Panel
 
-description: |
-  The panel must obey the rules for a SPI slave device as specified in
-  spi/spi-controller.yaml
-
 maintainers:
   - Tomi Valkeinen <tomi.valkeinen@ti.com>
 
 allOf:
   - $ref: panel-common.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/display/panel/samsung,ld9040.yaml

@@ -6,15 +6,12 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Samsung LD9040 AMOLED LCD parallel RGB panel with SPI control bus
 
-description: |
-  The panel must obey the rules for a SPI slave device as specified in
-  spi/spi-controller.yaml
-
 maintainers:
   - Andrzej Hajda <a.hajda@samsung.com>
 
 allOf:
   - $ref: panel-common.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
 
 properties:
   compatible:
@@ -63,8 +60,6 @@ examples:
 
         lcd@0 {
             compatible = "samsung,ld9040";
-            #address-cells = <1>;
-            #size-cells = <0>;
 
             reg = <0>;
             vdd3-supply = <&ldo7_reg>;

Documentation/devicetree/bindings/display/panel/samsung,s6e63m0.yaml

@@ -12,6 +12,7 @@ maintainers:
 allOf:
   - $ref: panel-common.yaml#
   - $ref: /schemas/leds/backlight/common.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/display/panel/sitronix,st7789v.yaml

@@ -6,15 +6,12 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Sitronix ST7789V RGB panel with SPI control bus
 
-description: |
-  The panel must obey the rules for a SPI slave device as specified in
-  spi/spi-controller.yaml
-
 maintainers:
   - Maxime Ripard <mripard@kernel.org>
 
 allOf:
   - $ref: panel-common.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/display/panel/sony,acx565akm.yaml

@@ -6,15 +6,12 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Sony ACX565AKM SDI Panel
 
-description: |
-  The panel must obey the rules for a SPI slave device as specified in
-  spi/spi-controller.yaml
-
 maintainers:
   - Tomi Valkeinen <tomi.valkeinen@ti.com>
 
 allOf:
   - $ref: panel-common.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
 
 properties:
   compatible:

Documentation/devicetree/bindings/display/panel/tpo,td.yaml

@@ -6,16 +6,13 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
 
 title: Toppoly TD Panels
 
-description: |
-  The panel must obey the rules for a SPI slave device as specified in
-  spi/spi-controller.yaml
-
 maintainers:
   - Marek Belisko <marek@goldelico.com>
   - H. Nikolaus Schaller <hns@goldelico.com>
 
 allOf:
   - $ref: panel-common.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
 
 properties:
   compatible: