dt-bindings: arm: fsl: Add more Kontron i.MX6UL/ULL compatibles

Add the compatibles for Kontron i.MX6UL N6311 SoM and boards and
the compatibles for Kontron i.MX6ULL N6411 SoM and boards.
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Documentation/devicetree/bindings/arm/fsl.yaml

@@ -181,6 +181,7 @@ properties:
               - armadeus,imx6ul-opos6uldev # OPOS6UL (i.MX6UL) SoM on OPOS6ULDev board
               - fsl,imx6ul-14x14-evk      # i.MX6 UltraLite 14x14 EVK Board
               - kontron,imx6ul-n6310-som  # Kontron N6310 SOM
+              - kontron,imx6ul-n6311-som  # Kontron N6311 SOM
           - const: fsl,imx6ul
 
       - description: Kontron N6310 S Board
@@ -189,6 +190,12 @@ properties:
           - const: kontron,imx6ul-n6310-som
           - const: fsl,imx6ul
 
+      - description: Kontron N6311 S Board
+        items:
+          - const: kontron,imx6ul-n6311-s
+          - const: kontron,imx6ul-n6311-som
+          - const: fsl,imx6ul
+
       - description: Kontron N6310 S 43 Board
         items:
           - const: kontron,imx6ul-n6310-s-43
@@ -202,10 +209,17 @@ properties:
               - armadeus,imx6ull-opos6ul    # OPOS6UL (i.MX6ULL) SoM
               - armadeus,imx6ull-opos6uldev # OPOS6UL (i.MX6ULL) SoM on OPOS6ULDev board
               - fsl,imx6ull-14x14-evk     # i.MX6 UltraLiteLite 14x14 EVK Board
+              - kontron,imx6ull-n6411-som # Kontron N6411 SOM
               - toradex,colibri-imx6ull-eval            # Colibri iMX6ULL Module on Colibri Evaluation Board
               - toradex,colibri-imx6ull-wifi-eval       # Colibri iMX6ULL Wi-Fi / Bluetooth Module on Colibri Evaluation Board
           - const: fsl,imx6ull
 
+      - description: Kontron N6411 S Board
+        items:
+          - const: kontron,imx6ull-n6411-s
+          - const: kontron,imx6ull-n6411-som
+          - const: fsl,imx6ull
+
       - description: i.MX6ULZ based Boards
         items:
           - enum: