drbd: Renamed the net_conf_update mutex to conf_update

Preparing to use the same mutex for disk_conf updates

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index 4ae3e7a..e372444 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2474,7 +2474,7 @@
 	tconn->cstate = C_STANDALONE;
 	mutex_init(&tconn->cstate_mutex);
 	spin_lock_init(&tconn->req_lock);
-	mutex_init(&tconn->net_conf_update);
+	mutex_init(&tconn->conf_update);
 	init_waitqueue_head(&tconn->ping_wait);
 	idr_init(&tconn->volumes);