dt-bindings: mmc: renesas,sdhi: Document RZ/V2L SoC

Document RZ/V2L SDHI bindings. RZ/V2L SDHI is almost identical to one
found on the R-Car Gen3. No driver changes are required as generic
compatible string "renesas,rcar-gen3-sdhi" will be used as a fallback.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20220227212330.22262-1-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Documentation/devicetree/bindings/mmc/renesas,sdhi.yaml

@@ -58,6 +58,7 @@ properties:
               - renesas,sdhi-r8a77995  # R-Car D3
               - renesas,sdhi-r8a779a0  # R-Car V3U
               - renesas,sdhi-r9a07g044 # RZ/G2{L,LC}
+              - renesas,sdhi-r9a07g054 # RZ/V2L
           - const: renesas,rcar-gen3-sdhi # R-Car Gen3 or RZ/G2
 
   reg:
@@ -107,7 +108,9 @@ allOf:
       properties:
         compatible:
           contains:
-            const: renesas,sdhi-r9a07g044
+            enum:
+              - renesas,sdhi-r9a07g044
+              - renesas,sdhi-r9a07g054
     then:
       properties:
         clocks: