Kobject: rename kobject_add_ng() to kobject_add()

Now that the old kobject_add() function is gone, rename kobject_add_ng()
to kobject_add() to clean up the namespace.

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 7ae9740..989d854 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1389,7 +1389,7 @@
 	rdev->mddev = mddev;
 	printk(KERN_INFO "md: bind<%s>\n", b);
 
-	if ((err = kobject_add_ng(&rdev->kobj, &mddev->kobj, "dev-%s", b)))
+	if ((err = kobject_add(&rdev->kobj, &mddev->kobj, "dev-%s", b)))
 		goto fail;
 
 	if (rdev->bdev->bd_part)