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/block/elevator.c b/block/elevator.c
index 5445c3c..645469a 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -929,7 +929,7 @@
 	elevator_t *e = q->elevator;
 	int error;
 
-	error = kobject_add_ng(&e->kobj, &q->kobj, "%s", "iosched");
+	error = kobject_add(&e->kobj, &q->kobj, "%s", "iosched");
 	if (!error) {
 		struct elv_fs_entry *attr = e->elevator_type->elevator_attrs;
 		if (attr) {