md: Export and rename kick_rdev_from_array

This export is required for clustering module in order to
co-ordinate remove/readd a rdev from all nodes.

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/drivers/md/md.h b/drivers/md/md.h
index 6dc0ce0..d98c0d7 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -671,6 +671,7 @@
 extern void md_unplug(struct blk_plug_cb *cb, bool from_schedule);
 extern void md_reload_sb(struct mddev *mddev);
 extern void md_update_sb(struct mddev *mddev, int force);
+extern void md_kick_rdev_from_array(struct md_rdev * rdev);
 static inline int mddev_check_plugged(struct mddev *mddev)
 {
 	return !!blk_check_plugged(md_unplug, mddev,