USB: Fix pxa27x_udc usb speed handling.

The new composite framework revealed a weakness in the
pxa27x_udc driver gadget register function. Instead of
checking if speed asked for was USB_LOW_SPEED upon
usb_gadget_register() to deny service, it checked only
for USB_FULL_SPEED, thus denying service to usb high
speed capable gadgets (like g_ether).
Signed-off-by: NRobert Jarzmik <robert.jarzmik@free.fr>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/usb/gadget/pxa27x_udc.c

@@ -1622,7 +1622,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver)
 	struct pxa_udc *udc = the_controller;
 	int retval;
 
-	if (!driver || driver->speed != USB_SPEED_FULL || !driver->bind
+	if (!driver || driver->speed < USB_SPEED_FULL || !driver->bind
 			|| !driver->disconnect || !driver->setup)
 		return -EINVAL;
 	if (!udc)