dt-bindings: gpu: img,powervr-rogue: Document GE7800 GPU in Renesas R-Car V3U

Document Imagination Technologies PowerVR Rogue GE7800 BNVC 15.5.1.64
present in Renesas R-Car R8A779A0 V3U SoC.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Matt Coster <matt.coster@imgtec.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20251106212342.2771579-2-niklas.soderlund+renesas@ragnatech.se
Signed-off-by: Rob Herring (Arm) <robh@kernel.org>

Author: Niklas Söderlund

Documentation/devicetree/bindings/gpu/img,powervr-rogue.yaml

@@ -20,7 +20,9 @@ properties:
           - const: img,img-gx6250
           - const: img,img-rogue
       - items:
-          - const: renesas,r8a77965-gpu
+          - enum:
+              - renesas,r8a77965-gpu
+              - renesas,r8a779a0-gpu
           - const: img,img-ge7800
           - const: img,img-rogue
       - items: