xfs: unify directory/attribute format definitions

The on-disk format definitions for the directory and attribute
structures are spread across 3 header files right now, only one of
which is dedicated to defining on-disk structures and their
manipulation (xfs_dir2_format.h). Pull all the format definitions
into a single header file - xfs_da_format.h - and switch all the
code over to point at that.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 57d95b2..cc22aa1 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -23,6 +23,8 @@
 #include "xfs_ag.h"
 #include "xfs_trans.h"
 #include "xfs_mount.h"
+#include "xfs_da_format.h"
+#include "xfs_da_btree.h"
 #include "xfs_bmap_btree.h"
 #include "xfs_alloc.h"
 #include "xfs_dinode.h"
@@ -31,8 +33,6 @@
 #include "xfs_bmap.h"
 #include "xfs_bmap_util.h"
 #include "xfs_error.h"
-#include "xfs_da_btree.h"
-#include "xfs_dir2_format.h"
 #include "xfs_dir2.h"
 #include "xfs_dir2_priv.h"
 #include "xfs_ioctl.h"