dt-bindings: dma: rz-dmac: Document RZ/G2UL SoC

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

Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220206200308.14315-1-biju.das.jz@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

Documentation/devicetree/bindings/dma/renesas,rz-dmac.yaml

@@ -4,7 +4,7 @@
 $id: http://devicetree.org/schemas/dma/renesas,rz-dmac.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Renesas RZ/{G2L,V2L} DMA Controller
+title: Renesas RZ/{G2L,G2UL,V2L} DMA Controller
 
 maintainers:
   - Biju Das <biju.das.jz@bp.renesas.com>
@@ -16,6 +16,7 @@ properties:
   compatible:
     items:
       - enum:
+          - renesas,r9a07g043-dmac # RZ/G2UL
           - renesas,r9a07g044-dmac # RZ/G2{L,LC}
           - renesas,r9a07g054-dmac # RZ/V2L
       - const: renesas,rz-dmac