kobject: make kset_get_ownership() 'static'

kset_get_ownership() is only used in lib/kobject.c, so make it 'static'.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

lib/kobject.c

@@ -887,7 +887,7 @@ static void kset_release(struct kobject *kobj)
 	kfree(kset);
 }
 
-void kset_get_ownership(struct kobject *kobj, kuid_t *uid, kgid_t *gid)
+static void kset_get_ownership(struct kobject *kobj, kuid_t *uid, kgid_t *gid)
 {
 	if (kobj->parent)
 		kobject_get_ownership(kobj->parent, uid, gid);