dt-bindings: reset: renesas,rzv2h-usb2phy: Document RZ/V2N SoC support

Document support for the USB2PHY reset controller found on the Renesas
RZ/V2N (R9A09G056) SoC. The reset controller IP is functionally identical
to that on the RZ/V2H(P) SoC, so no driver changes are needed. The existing
`renesas,r9a09g057-usb2phy-reset` compatible will be used as a fallback
for the RZ/V2N SoC.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20250528133031.167647-1-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

Author: prabhakarlad

Documentation/devicetree/bindings/reset/renesas,rzv2h-usb2phy-reset.yaml

@@ -15,7 +15,12 @@ description:
 
 properties:
   compatible:
-    const: renesas,r9a09g057-usb2phy-reset     # RZ/V2H(P)
+    oneOf:
+      - items:
+          - const: renesas,r9a09g056-usb2phy-reset # RZ/V2N
+          - const: renesas,r9a09g057-usb2phy-reset
+
+      - const: renesas,r9a09g057-usb2phy-reset # RZ/V2H(P)
 
   reg:
     maxItems: 1