Kobject: convert drivers/* from kobject_unregister() to kobject_put()

There is no need for kobject_unregister() anymore, thanks to Kay's
kobject cleanup changes, so replace all instances of it with
kobject_put().


Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/md/md.c b/drivers/md/md.c
index ae800ba..c28a120 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -231,7 +231,7 @@
 		list_del(&mddev->all_mddevs);
 		spin_unlock(&all_mddevs_lock);
 		blk_cleanup_queue(mddev->queue);
-		kobject_unregister(&mddev->kobj);
+		kobject_put(&mddev->kobj);
 	} else
 		spin_unlock(&all_mddevs_lock);
 }