dt-bindings: usb: renesas,rzg3e-xhci: Add RZ/V2H(P) and RZ/V2N support

dt-bindings: usb: renesas,rzg3e-xhci: Add RZ/V2H(P) and RZ/V2N support

Add device tree binding support for the USB3.2 Gen2 controller on Renesas
RZ/V2H(P) and RZ/V2N SoCs. The USB3.2 IP on these SoCs is identical to
that found on the RZ/G3E SoC.

Add new compatible strings "renesas,r9a09g056-xhci" for RZ/V2N and
"renesas,r9a09g057-xhci" for RZ/V2H(P). Both variants use
"renesas,r9a09g047-xhci" as a fallback compatible to indicate hardware
compatibility with the RZ/G3E implementation.

Update the title to be more generic as it now covers multiple SoC
families beyond just RZ/G3E.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20251101042440.648321-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>