dt-bindings: usb: renesas,usbhs: Deprecate renesas,enable-gpio

Commit 2071d096 ("Documentation: gpio: guidelines for bindings")
deprecated the "gpio" suffix for GPIO consumers in favor of the "gpios"
suffix.  Update the Renesas HS-USB DT bindings to reflect this.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/e9cf476ffac794bad7b0860dc89afd62a9ebc812.1727853953.git.geert+renesas@glider.be


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>