dt-bindings: display: bridge: ldb: Fill in reg property

Add missing reg and reg-names properties for both 'LDB_CTRL'
and 'LVDS_CTRL' registers.

Fixes: 463db5c2 ("drm: bridge: ldb: Implement simple Freescale i.MX8MP LDB bridge")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Robby Cai <robby.cai@nxp.com>
Cc: Robert Foss <robert.foss@linaro.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: devicetree@vger.kernel.org
To: dri-devel@lists.freedesktop.org
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220504012601.423644-1-marex@denx.de

Documentation/devicetree/bindings/display/bridge/fsl,ldb.yaml

@@ -24,6 +24,15 @@ properties:
   clock-names:
     const: ldb
 
+  reg:
+    minItems: 2
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: ldb
+      - const: lvds
+
   ports:
     $ref: /schemas/graph.yaml#/properties/ports
 
@@ -56,10 +65,15 @@ examples:
     #include <dt-bindings/clock/imx8mp-clock.h>
 
     blk-ctrl {
-        bridge {
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        bridge@5c {
             compatible = "fsl,imx8mp-ldb";
             clocks = <&clk IMX8MP_CLK_MEDIA_LDB>;
             clock-names = "ldb";
+            reg = <0x5c 0x4>, <0x128 0x4>;
+            reg-names = "ldb", "lvds";
 
             ports {
                 #address-cells = <1>;