nvme-fc appid support needs CONFIG_BLK_CGROUP_FC_APPID to work, so disable
the whole code if the option is not set.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Acked-by: NTejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/20220420042723.1010598-3-hch@lst.deSigned-off-by: NJens Axboe <axboe@kernel.dk>