ext4: move headers out of include/linux

Move ext4 headers out of include/linux.  This is just the trivial move,
there's some more thing that could be done later. 

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/fs/ext4/xattr_user.c b/fs/ext4/xattr_user.c
index 7ed3d8e..67be723 100644
--- a/fs/ext4/xattr_user.c
+++ b/fs/ext4/xattr_user.c
@@ -8,8 +8,8 @@
 #include <linux/module.h>
 #include <linux/string.h>
 #include <linux/fs.h>
-#include <linux/ext4_jbd2.h>
-#include <linux/ext4_fs.h>
+#include "ext4_jbd2.h"
+#include "ext4.h"
 #include "xattr.h"
 
 #define XATTR_USER_PREFIX "user."