igb: add support for another dual port 82576 non-security nic

Adding device id to support 82576NS dual port copper
NIC.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/igb/e1000_82575.c

@@ -80,6 +80,7 @@ static s32 igb_get_invariants_82575(struct e1000_hw *hw)
 		mac->type = e1000_82575;
 		break;
 	case E1000_DEV_ID_82576:
+	case E1000_DEV_ID_82576_NS:
 	case E1000_DEV_ID_82576_FIBER:
 	case E1000_DEV_ID_82576_SERDES:
 		mac->type = e1000_82576;