dt-bindings: usb: renesas,usbhs: Add support for r8a7742

Document support for RZ/G1H (R8A7742) SoC.
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/usb/renesas,usbhs.yaml

@@ -22,6 +22,7 @@ properties:
 
       - items:
           - enum:
+              - renesas,usbhs-r8a7742  # RZ/G1H
               - renesas,usbhs-r8a7743  # RZ/G1M
               - renesas,usbhs-r8a7744  # RZ/G1N
               - renesas,usbhs-r8a7745  # RZ/G1E