dt-bindings: usb: renesas,usbhs: Document RZ/G3S SoC

dt-bindings: usb: renesas,usbhs: Document RZ/G3S SoC

The USBHS IP block on RZ/G3S SoC is identitcal to the one found on the
RZ/G2L device. Document the RZ/G3S USBHS IP block.

Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://lore.kernel.org/r/20241126092050.1825607-7-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>