e1000: Add device IDs of blade version of the 82571 quad port

This blade-specific board form factor is identical to the 82571EB
board.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/e1000/e1000_hw.c b/drivers/net/e1000/e1000_hw.c
index ba120f7..8604adb 100644
--- a/drivers/net/e1000/e1000_hw.c
+++ b/drivers/net/e1000/e1000_hw.c
@@ -387,6 +387,7 @@
 	case E1000_DEV_ID_82571EB_SERDES_DUAL:
 	case E1000_DEV_ID_82571EB_SERDES_QUAD:
 	case E1000_DEV_ID_82571EB_QUAD_COPPER:
+	case E1000_DEV_ID_82571PT_QUAD_COPPER:
 	case E1000_DEV_ID_82571EB_QUAD_FIBER:
 	case E1000_DEV_ID_82571EB_QUAD_COPPER_LOWPROFILE:
 		hw->mac_type = e1000_82571;