scsi: qla2xxx: Added support for MPI and PEP regions for ISP28XX

commit a530bf69 upstream.

This patch adds support for MPI/PEP region updates which is required with
secure flash updates for ISP28XX.

Fixes: 3f006ac3

 ("scsi: qla2xxx: Secure flash update support for ISP28XX")
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20191203223657.22109-3-hmadhani@marvell.com
Signed-off-by: Michael Hernandez <mhernandez@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>