dt-bindings: soc: renesas: Document RZ/V2H EVK board

dt-bindings: soc: renesas: Document RZ/V2H EVK board

Add "renesas,rzv2h-evk" which targets the Renesas RZ/V2H ("R9A09G057")
EVK board.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/20240828124134.188864-2-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>