xfs/122: fix xfs header ordering problems

xfs/122: fix xfs header ordering problems

XFS headers are supposed to be included in a certain order so that
inline functions actually compile correctly.  For the most part the
shell feeds us the files in an order that works, but with the
addition of the xfs_dir2_dirblock_bytes function this doesn't always
work now.  Therefore, explicitly #include the headers in the
required order.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Eryu Guan <eguan@redhat.com>
Signed-off-by: Eryu Guan <eguan@redhat.com>