ieee1394: constify device ID tables

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

drivers/ieee1394/nodemgr.h

@@ -125,7 +125,7 @@ struct hpsb_protocol_driver {
 	 * probe function below can implement further protocol
 	 * dependent or vendor dependent checking.
 	 */
-	struct ieee1394_device_id *id_table;
+	const struct ieee1394_device_id *id_table;
 
 	/*
 	 * The update function is called when the node has just