kobject: add kobject_init_and_add function

Also add a kobject_init_and_add function which bundles up what a lot of
the current callers want to do all at once, and it properly handles the
memory usages, unlike kobject_register();

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/include/linux/kobject.h b/include/linux/kobject.h
index 57eea4c..e2b8c3d 100644
--- a/include/linux/kobject.h
+++ b/include/linux/kobject.h
@@ -84,6 +84,11 @@
 extern int __must_check kobject_add_ng(struct kobject *kobj,
 				       struct kobject *parent,
 				       const char *fmt, ...);
+extern int __must_check kobject_init_and_add(struct kobject *kobj,
+					     struct kobj_type *ktype,
+					     struct kobject *parent,
+					     const char *fmt, ...);
+
 extern void kobject_del(struct kobject *);
 
 extern int __must_check kobject_rename(struct kobject *, const char *new_name);