kobject: reorder kobject to save space on 64 bit builds

reorder kobject to save space on 64 bit builds.
shrinks from 72 to 64 bytes & moves allocated kobject to a smaller
slab.

Signed-off-by: Richard Kennedy <richard@rsk.demon.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

include/linux/kobject.h

@@ -58,12 +58,12 @@ enum kobject_action {
 
 struct kobject {
 	const char		*name;
-	struct kref		kref;
 	struct list_head	entry;
 	struct kobject		*parent;
 	struct kset		*kset;
 	struct kobj_type	*ktype;
 	struct sysfs_dirent	*sd;
+	struct kref		kref;
 	unsigned int state_initialized:1;
 	unsigned int state_in_sysfs:1;
 	unsigned int state_add_uevent_sent:1;