Use the incore dq_flags to figure out the dquot type.  This is the first
step towards removing xfs_disk_dquot from the incore dquot.
Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NChandan Babu R <chandanrlinux@gmail.com>