This patch fixes the error:
ERROR: "usb_speed_string" [drivers/usb/core/usbcore.ko] undefined!
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>