usb: renesas_usbhs: Add Renesas USBHS Gadget

This patch add usb gadget code to SuperH USBHS.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --cc drivers/usb/gadget/Kconfig
Simple merge

diff --cc drivers/usb/gadget/gadget_chips.h
Simple merge

diff --cc drivers/usb/renesas_usbhs/Makefile
Simple merge

diff --cc drivers/usb/renesas_usbhs/mod.c
Simple merge

diff --cc drivers/usb/renesas_usbhs/mod.h
Simple merge

diff --cc drivers/usb/renesas_usbhs/mod_gadget.c
Simple merge