nvme: update timeout module parameter type

nvme: update timeout module parameter type

The underlying blk_mq_tag_set, and request timeout parameters support an
unsigned int. Extend the size of the nvme module parameters for io and
admin commands to match.

Signed-off-by: Marc Olson <marcolso@amazon.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
BugLink: https://bugs.launchpad.net/bugs/1729119
(cherry-picked from commit 8ae4e4477d8f5cc7736816a0492f82934ca32ab7)
Signed-off-by: Daniel Axtens <daniel.axtens@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Colin King <colin.king@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>