Bluetooth: bcm203x: Use GFP_KERNEL in workqueue

A workqueue is allowed to sleep so we can safely use GFP_KERNEL instead of
GFP_ATOMIC. This is still legacy code when the driver used timer BHs and not a
worqueue.
Signed-off-by: David Herrmann <dh.herrmann@googlemail.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

drivers/bluetooth/bcm203x.c

@@ -161,7 +161,7 @@ static void bcm203x_work(struct work_struct *work)
 	if (atomic_read(&data->shutdown))
 		return;
 
-	if (usb_submit_urb(data->urb, GFP_ATOMIC) < 0)
+	if (usb_submit_urb(data->urb, GFP_KERNEL) < 0)
 		BT_ERR("Can't submit URB");
 }