scsi: aacraid: Include HBA direct interface

scsi: aacraid: Include HBA direct interface

BugLink: http://bugs.launchpad.net/bugs/1668726
Added support to send direct pasthru srb commands from management utilty
to the  controller.

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Signed-off-by: Dave Carroll <David.Carroll@microsemi.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
(cherry picked from linux-next commit 423400e64d377c0d8a2459795420681177e51e74)
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>