[SCSI] aacraid: kdump fix

This patch fixes kernel panic issue while booting into the kdump kernel.

We have triggered crash and kdump vmcore was successful. No issues seen while
booting into the OS.

Signed-off-by: Mahesh Rajashekhara <Mahesh.Rajashekhara@pmcs.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>