dt-bindings: display: Add BCM2712 MOP bindings

The BCM2712 has a MOP controller which is basically a new revision of
the TXP.

Express that by adding a new compatible for it.

Signed-off-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20241025-drm-vc4-2712-support-v2-6-35efa83c8fc0@raspberrypi.com
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

Documentation/devicetree/bindings/display/brcm,bcm2835-txp.yaml

@@ -11,7 +11,9 @@ maintainers:
 
 properties:
   compatible:
-    const: brcm,bcm2835-txp
+    enum:
+      - brcm,bcm2712-mop
+      - brcm,bcm2835-txp
 
   reg:
     maxItems: 1