[TG3]: Add basic 5906 support.

Add support for the new 5709 device.  This is a new 10/100 Mbps chip.
The mailbox access and firmware interface are quite different from
all other tg3 chips.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index ea3140d..b7e85ff 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -1944,6 +1944,8 @@
 #define PCI_DEVICE_ID_TIGON3_5901	0x170d
 #define PCI_DEVICE_ID_BCM4401B1		0x170c
 #define PCI_DEVICE_ID_TIGON3_5901_2	0x170e
+#define PCI_DEVICE_ID_TIGON3_5906	0x1712
+#define PCI_DEVICE_ID_TIGON3_5906M	0x1713
 #define PCI_DEVICE_ID_BCM4401		0x4401
 #define PCI_DEVICE_ID_BCM4401B0		0x4402