xfs/21{6,7} Use default -l concurrency=0 on mkfs.xfs that supports it

xfs/21{6,7} Use default -l concurrency=0 on mkfs.xfs that supports it

The XFS concurrency optimization breaks the log sizing check on
systems with non-rotational disks and high amount of CPUs. Default to
the old behavior with -l concurrency=0 and with -d concurrency=0.

Signed-off-by: Lukas Herbolt <lukas@herbolt.com>
Reviewed-by: Zorro Lang <zlang@kernel.org>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Zorro Lang <zlang@kernel.org>