[SCSI] pm80xx: MSI-X implementation for using 64 interrupts

Implementation of interrupt handlers and tasklets to support
upto 64 interrupt for the device.

Signed-off-by: Sakthivel K <Sakthivel.SaravananKamalRaju@pmcs.com>
Signed-off-by: Anand Kumar S <AnandKumar.Santhanam@pmcs.com>
Acked-by: Jack Wang <jack_wang@usish.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/pm8001/pm8001_sas.h b/drivers/scsi/pm8001/pm8001_sas.h
index e0faa95..8e281c8 100644
--- a/drivers/scsi/pm8001/pm8001_sas.h
+++ b/drivers/scsi/pm8001/pm8001_sas.h
@@ -453,7 +453,9 @@
 #endif
 	u32			logging_level;
 	u32			fw_status;
+	u32			int_vector;
 	const struct firmware 	*fw_image;
+	u8			outq[PM8001_MAX_MSIX_VEC];
 };
 
 struct pm8001_work {