nvme: Fix setting logical block format when revalidating

Revalidating the disk needs to set the logical block format and capacity,
otherwise it can't figure out if the users modified anything about
the namespace.

Fixes: cdbff4f2

 ("nvme: remove nvme_revalidate_ns")

Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>