xfs: rename XFS_DQ_{USER,GROUP,PROJ} to XFS_DQTYPE_*

xfs: rename XFS_DQ_{USER,GROUP,PROJ} to XFS_DQTYPE_*

Source kernel commit: 8cd4901da56caadc16b4e8d6b434291a8ce31d7c

We're going to split up the incore dquot state flags from the ondisk
dquot flags (eventually renaming this "type") so start by renaming the
three flags and the bitmask that are going to participate in this.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Eric Sandeen <sandeen@sandeen.net>