scsi: smartpqi: Add RAID bypass counter

Add a counter to assist in verifying when RAID bypass is being used.

Link: https://lore.kernel.org/r/159622930468.30579.13153724465552773544.stgit@brunhilda


Reviewed-by: Scott Teel <scott.teel@microsemi.com>
Reviewed-by: Scott Benesh <scott.benesh@microsemi.com>
Reviewed-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Kevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>