scsi: core: Fix scsi_device_max_queue_depth()

The comment above scsi_device_max_queue_depth() and also the description of
commit ca445321 ("scsi: core: Make sure sdev->queue_depth is <=
max(shost->can_queue, 1024)") contradict the implementation of the function
scsi_device_max_queue_depth(). Additionally, the maximum queue depth of a
SCSI LUN never exceeds host->can_queue. Fix scsi_device_max_queue_depth()
by changing max_t() into min_t().

Link: https://lore.kernel.org/r/20211203231950.193369-2-bvanassche@acm.org
Fixes: ca445321

 ("scsi: core: Make sure sdev->queue_depth is <= max(shost->can_queue, 1024)")
Cc: Hannes Reinecke <hare@suse.de>
Cc: Sumanesh Samanta <sumanesh.samanta@broadcom.com>
Tested-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>