igb: Add support for i354 devices

This patch adds base support for new i354 devices.  Loopback test is
unsupported for this release.

Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
diff --git a/drivers/net/ethernet/intel/igb/e1000_hw.h b/drivers/net/ethernet/intel/igb/e1000_hw.h
index 84df815..1138cca 100644
--- a/drivers/net/ethernet/intel/igb/e1000_hw.h
+++ b/drivers/net/ethernet/intel/igb/e1000_hw.h
@@ -70,6 +70,9 @@
 #define E1000_DEV_ID_I210_SERDES		0x1537
 #define E1000_DEV_ID_I210_SGMII			0x1538
 #define E1000_DEV_ID_I211_COPPER		0x1539
+#define E1000_DEV_ID_I354_BACKPLANE_1GBPS	0x1F40
+#define E1000_DEV_ID_I354_SGMII			0x1F41
+#define E1000_DEV_ID_I354_BACKPLANE_2_5GBPS	0x1F45
 
 #define E1000_REVISION_2 2
 #define E1000_REVISION_4 4
@@ -90,6 +93,7 @@
 	e1000_82576,
 	e1000_82580,
 	e1000_i350,
+	e1000_i354,
 	e1000_i210,
 	e1000_i211,
 	e1000_num_macs  /* List is 1-based, so subtract 1 for true count. */