scsi: arcmsr: Support new RAID controller ARC-1688

Add support for new Areca RAID controller ARC-1688

Signed-off-by: ching Huang <ching2048@areca.com.tw>
Link: https://lore.kernel.org/r/110bdc873497d3d5e090b908fb159b6155bb3a2b.camel@areca.com.tw


Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>