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>

Documentation/devicetree/bindings/usb/renesas,rzg3e-xhci.yaml

@@ -4,14 +4,22 @@
 $id: http://devicetree.org/schemas/usb/renesas,rzg3e-xhci.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Renesas RZ/G3E USB 3.2 Gen2 Host controller
+title: Renesas USB 3.2 Gen2 Host controller
 
 maintainers:
   - Biju Das <biju.das.jz@bp.renesas.com>
 
 properties:
   compatible:
-    const: renesas,r9a09g047-xhci
+    oneOf:
+      - items:
+          - enum:
+              - renesas,r9a09g056-xhci # RZ/V2N
+              - renesas,r9a09g057-xhci # RZ/V2H(P)
+          - const: renesas,r9a09g047-xhci
+
+      - items:
+          - const: renesas,r9a09g047-xhci # RZ/G3E
 
   reg:
     maxItems: 1