kobject: make kobject_cleanup be static

No one except the kobject core calls it so make the function static.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

include/linux/kobject.h

@@ -79,8 +79,6 @@ static inline const char * kobject_name(const struct kobject * kobj)
 }
 
 extern void kobject_init(struct kobject *);
-extern void kobject_cleanup(struct kobject *);
-
 extern int __must_check kobject_add(struct kobject *);
 extern void kobject_del(struct kobject *);
 

lib/kobject.c

@@ -436,12 +436,11 @@ struct kobject * kobject_get(struct kobject * kobj)
 	return kobj;
 }
 
-/**
+/*
  * kobject_cleanup - free kobject resources.
- *	@kobj:	object.
+ * @kobj: object to cleanup
  */
-
-void kobject_cleanup(struct kobject * kobj)
+static void kobject_cleanup(struct kobject *kobj)
 {
 	struct kobj_type * t = get_ktype(kobj);
 	struct kset * s = kobj->kset;