[SCSI] bfa: Add support to configure min/max bandwidth for a pcifn

- Added support to configure minimum bandwidth for a pcifn.
- Minimum bandwith is guaranteed at per queue level.
- Added support to update pcifn bandwidth dynamically without
  a server reboot.

Signed-off-by: Krishna Gudipati <kgudipat@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/bfa/bfad_bsg.h b/drivers/scsi/bfa/bfad_bsg.h
index 37922b9..e48dcca 100644
--- a/drivers/scsi/bfa/bfad_bsg.h
+++ b/drivers/scsi/bfa/bfad_bsg.h
@@ -469,7 +469,8 @@
 	bfa_status_t		status;
 	u16			bfad_num;
 	u16			pcifn_id;
-	u32			bandwidth;
+	u16			bw_min;
+	u16			bw_max;
 	u8			port;
 	enum bfi_pcifn_class	pcifn_class;
 	u8			rsvd[1];