dt-bindings: gpu: v3d: Add BCM2712's compatible

BCM2712, Raspberry Pi 5's SoC, contains a V3D core. So add its specific
compatible to the bindings.
Signed-off-by: Iago Toral Quiroga <itoral@igalia.com>
Reviewed-by: Maíra Canal <mcanal@igalia.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Maíra Canal <mcanal@igalia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231031073859.25298-4-itoral@igalia.com

Documentation/devicetree/bindings/gpu/brcm,bcm-v3d.yaml

@@ -17,6 +17,7 @@ properties:
   compatible:
     enum:
       - brcm,2711-v3d
+      - brcm,2712-v3d
       - brcm,7268-v3d
       - brcm,7278-v3d