scsi: aacraid: Update driver version

scsi: aacraid: Update driver version

BugLink: http://bugs.launchpad.net/bugs/1668726
Updated driver version to 50792

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
Reviewed-by: David 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 0662cc968aceaca34848e63f431e585f4f71f746)
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>