[SCSI] megaraid_sas: Add MSI-X support and msix_disable module parameter

This patch adds MSI-X support and 'msix_disable' module parameter to
the megaraid_sas driver.

Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 224ec31..ff9845c 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -1335,6 +1335,9 @@
 
 	struct timer_list io_completion_timer;
 	struct list_head internal_reset_pending_q;
+
+	u8	msi_flag;
+	struct msix_entry msixentry;
 };
 
 enum {