ixgbe: Add PF support for VF promiscuous mode

This patch extends the xcast mailbox message to include support for
unicast promiscuous mode.  To allow a VF to enter this mode the PF
must be in promiscuous mode.

A later patch will add the support needed in the VF driver (ixgbevf)

Signed-off-by: Don Skidmore <donald.c.skidmore@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h
index 01c2667..811cb4f 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_mbx.h
@@ -74,6 +74,7 @@ enum ixgbe_pfvf_api_rev {
 	ixgbe_mbox_api_20,	/* API version 2.0, solaris Phase1 VF driver */
 	ixgbe_mbox_api_11,	/* API version 1.1, linux/freebsd VF driver */
 	ixgbe_mbox_api_12,	/* API version 1.2, linux/freebsd VF driver */
+	ixgbe_mbox_api_13,	/* API version 1.3, linux/freebsd VF driver */
 	/* This value should always be last */
 	ixgbe_mbox_api_unknown,	/* indicates that API version is not known */
 };