usb: gadget: only GPL drivers in the gadget and phy framework

We only support GPL drivers in the USB Gadget Framework,
it sounds correct to make all exported symbols GPL too.

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --cc drivers/usb/gadget/configfs.c
Simple merge

diff --cc drivers/usb/gadget/f_fs.c
Simple merge

diff --cc drivers/usb/gadget/f_rndis.c
Simple merge

diff --cc drivers/usb/gadget/rndis.c
Simple merge

diff --cc drivers/usb/gadget/storage_common.c
Simple merge

diff --cc drivers/usb/gadget/u_ether.c
Simple merge

diff --cc drivers/usb/gadget/u_f.c
Simple merge

diff --cc drivers/usb/phy/phy-generic.c
Simple merge