dt-bindings: gpu: mali-bifrost: Document RZ/V2L SoC

The Renesas RZ/V2L SoC (a.k.a R9A07G054) has a Bifrost Mali-G31 GPU,
add a compatible string for it.
Signed-off-by: NLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: NBiju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Acked-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: NRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220308211543.3081-1-prabhakar.mahadev-lad.rj@bp.renesas.com

Documentation/devicetree/bindings/gpu/arm,mali-bifrost.yaml

@@ -20,6 +20,7 @@ properties:
           - mediatek,mt8183-mali
           - realtek,rtd1619-mali
           - renesas,r9a07g044-mali
+          - renesas,r9a07g054-mali
           - rockchip,px30-mali
           - rockchip,rk3568-mali
       - const: arm,mali-bifrost # Mali Bifrost GPU model/revision is fully discoverable
@@ -109,7 +110,9 @@ allOf:
       properties:
         compatible:
           contains:
-            const: renesas,r9a07g044-mali
+            enum:
+              - renesas,r9a07g044-mali
+              - renesas,r9a07g054-mali
     then:
       properties:
         interrupts: