ixgbe: add support for 82599 based X520 10G Dual KX4 Mezz card

This patch adds device support for the 82599 based X520 10GbE
Dual Port KX4 Mezzanine card.

Signed-off-by: Don Skidmore<donald.c.skidmore@intel.com>
Acked-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ixgbe/ixgbe_82599.c b/drivers/net/ixgbe/ixgbe_82599.c
index bb87c43..34b0492 100644
--- a/drivers/net/ixgbe/ixgbe_82599.c
+++ b/drivers/net/ixgbe/ixgbe_82599.c
@@ -330,6 +330,7 @@
 
 	switch (hw->device_id) {
 	case IXGBE_DEV_ID_82599_KX4:
+	case IXGBE_DEV_ID_82599_KX4_MEZZ:
 	case IXGBE_DEV_ID_82599_COMBO_BACKPLANE:
 	case IXGBE_DEV_ID_82599_XAUI_LOM:
 		/* Default device ID is mezzanine card KX/KX4 */