usb: uwb: use correct locking calls for rc data

The rc object's members can be accessed from both a timer and URB
callback.  Use spin_*_irq instead of spin_*_bh.

Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/uwb/drp.c b/drivers/uwb/drp.c
index 3fbcf78..16ada83 100644
--- a/drivers/uwb/drp.c
+++ b/drivers/uwb/drp.c
@@ -67,14 +67,14 @@
 	} else
 		dev_err(&rc->uwb_dev.dev, "SET-DRP-IE: timeout\n");
 
-	spin_lock_bh(&rc->rsvs_lock);
+	spin_lock_irq(&rc->rsvs_lock);
 	if (rc->set_drp_ie_pending > 1) {
 		rc->set_drp_ie_pending = 0;
 		uwb_rsv_queue_update(rc);	
 	} else {
 		rc->set_drp_ie_pending = 0;	
 	}
-	spin_unlock_bh(&rc->rsvs_lock);
+	spin_unlock_irq(&rc->rsvs_lock);
 }
 
 /**