lib: export symbol kobject_move()

drivers/cpufreq/cpufreq.c is already using this function. And now btrfs
needs it as well. Export symbol kobject_move().
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David Sterba <dsterba@suse.cz>

lib/kobject.c

@@ -548,6 +548,7 @@ int kobject_move(struct kobject *kobj, struct kobject *new_parent)
 	kfree(devpath);
 	return error;
 }
+EXPORT_SYMBOL_GPL(kobject_move);
 
 /**
  * kobject_del - unlink kobject from hierarchy.