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/base/class.c b/drivers/base/class.c
index 624b331..8e3cba2 100644
--- a/drivers/base/class.c
+++ b/drivers/base/class.c
@@ -586,8 +586,8 @@
 	else
 		class_dev->kobj.parent = &parent_class->subsys.kobj;
 
-	error = kobject_add_ng(&class_dev->kobj, class_dev->kobj.parent,
-			       "%s", class_dev->class_id);
+	error = kobject_add(&class_dev->kobj, class_dev->kobj.parent,
+			    "%s", class_dev->class_id);
 	if (error)
 		goto out2;