ASoC: dt-bindings: renesas,rz-ssi: Document RZ/V2L SoC

Document RZ/V2L SSI bindings. RZ/V2L SSI is identical to one found
on the RZ/G2L SoC. No driver changes are required as generic compatible
string "renesas,rz-ssi" will be used as a fallback.
Signed-off-by: NLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: NBiju Das <biju.das.jz@bp.renesas.com>
Acked-by: NKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20220227225633.28829-1-prabhakar.mahadev-lad.rj@bp.renesas.comSigned-off-by: NMark Brown <broonie@kernel.org>

Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml

@@ -4,7 +4,7 @@
 $id: http://devicetree.org/schemas/sound/renesas,rz-ssi.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Renesas RZ/G2L ASoC Sound Serial Interface (SSIF-2)
+title: Renesas RZ/{G2L,V2L} ASoC Sound Serial Interface (SSIF-2)
 
 maintainers:
   - Biju Das <biju.das.jz@bp.renesas.com>
@@ -14,6 +14,7 @@ properties:
     items:
       - enum:
           - renesas,r9a07g044-ssi  # RZ/G2{L,LC}
+          - renesas,r9a07g054-ssi  # RZ/V2L
       - const: renesas,rz-ssi
 
   reg: