usb: gadget: udc: add Renesas RZ/N1 USBF controller support

Add support for the Renesas USBF controller.
This controller is an USB2.0 UDC controller available in the
Renesas r9a06g032 SoC (RZ/N1 family).

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Link: https://lore.kernel.org/r/20230105152257.310642-4-herve.codina@bootlin.com


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