dt-bindings: memory: renesas,rpc-if: Document RZ/G2UL SoC

Document RZ/G2UL RPC-IF bindings. RZ/G2UL RPC-IF is identical to one found
on the RZ/G2L SoC. No driver changes are required as generic compatible
string "renesas,rzg2l-rpc-if" will be used as a fallback.

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220501082508.25511-1-biju.das.jz@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

Documentation/devicetree/bindings/memory-controllers/renesas,rpc-if.yaml

@@ -39,6 +39,7 @@ properties:
 
       - items:
           - enum:
+              - renesas,r9a07g043-rpc-if      # RZ/G2UL
               - renesas,r9a07g044-rpc-if      # RZ/G2{L,LC}
               - renesas,r9a07g054-rpc-if      # RZ/V2L
           - const: renesas,rzg2l-rpc-if