scsi: hisi_sas: Add support for DIF feature for v2 hw

scsi: hisi_sas: Add support for DIF feature for v2 hw

BugLink: https://bugs.launchpad.net/bugs/1810457
For v3 hw, we support DIF operation for SAS, but not SATA.

In addition, DIF CRC16 is supported.

This patchset adds the SW support for the described features. The main
components are as follows:

- Get protection mask from module param
- Fill PI fields
- Fill related to DIF in DQ and protection iu memories

Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(backported from commit d6a9000b81befd436fe4bcdae76322928bda724c)
[ dannf: scsi_prot_ref_tag() hadn't yet been renamed to t10_pi_ref_tag(),
  modify to use the old name ]
Signed-off-by: dann frazier <dann.frazier@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Signed-off-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>