You cannot backport assignment of netdev->addr_assign_type
given that its part of the netdev data structure only in future
kernels.

mcgrof@tux ~/linux-next (git::master)$ git describe --contains c1f79426
v2.6.36-rc1~571^2~104

--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -2622,7 +2622,9 @@ static int atl1c_probe(struct pci_dev *p
 	}
 	if (atl1c_read_mac_addr(&adapter->hw)) {
 		/* got a random MAC address, set NET_ADDR_RANDOM to netdev */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36))
 		netdev->addr_assign_type = NET_ADDR_RANDOM;
+#endif
 	}
 	memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);
 	if (netif_msg_probe(adapter))
--- a/drivers/net/ethernet/atheros/atlx/atl1.c
+++ b/drivers/net/ethernet/atheros/atlx/atl1.c
@@ -3060,7 +3060,9 @@ static int atl1_probe(struct pci_dev *pd
 	/* copy the MAC address out of the EEPROM */
 	if (atl1_read_mac_addr(&adapter->hw)) {
 		/* mark random mac */
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,36))
 		netdev->addr_assign_type = NET_ADDR_RANDOM;
+#endif
 	}
 	memcpy(netdev->dev_addr, adapter->hw.mac_addr, netdev->addr_len);