usb: gadget: renesas_usbhs: remove usbhs_sys_usb_ctrl()

usbhs_sys_usb_ctrl() can collect into usbhs_sys_host/function_ctrl().

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

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

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

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

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