e1000: Add PCI ID 0x10a4 for our new 4-port PCI-Express device

Device 0x10a4 is a double 82571 on a single PCI-Express card and
has 4 gigabit capable ports.

Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>

drivers/net/e1000/e1000_hw.h

@@ -470,6 +470,7 @@ int32_t e1000_check_phy_reset_block(struct e1000_hw *hw);
 #define E1000_DEV_ID_82571EB_COPPER      0x105E
 #define E1000_DEV_ID_82571EB_FIBER       0x105F
 #define E1000_DEV_ID_82571EB_SERDES      0x1060
+#define E1000_DEV_ID_82571EB_QUAD_COPPER 0x10A4
 #define E1000_DEV_ID_82572EI_COPPER      0x107D
 #define E1000_DEV_ID_82572EI_FIBER       0x107E
 #define E1000_DEV_ID_82572EI_SERDES      0x107F