xfs: remove u_int* type usage

Source kernel commit: 65a7935ddc9a1f0c723842776259d76394b4bd11

Use the uint* types instead of the u_int* types.  This will (hopefully)
pair with an xfsprogs cleanup.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
[sandeen: no-op commit, libxfs was already fixed in userspace]
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>