nvme: apply nvme API to quiesce/unquiesce admin queue

Apply the added two APIs to quiesce/unquiesce admin queue.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20211014081710.1871747-3-ming.lei@redhat.com


Signed-off-by: Jens Axboe <axboe@kernel.dk>