netdev: add missing set_mac_address hook

Many drivers lost the ability to set ethernet address accidently
during the net_device_ops conversion.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/3c503.c b/drivers/net/3c503.c
index c092c39..5b91a85 100644
--- a/drivers/net/3c503.c
+++ b/drivers/net/3c503.c
@@ -177,6 +177,7 @@
 	.ndo_get_stats		= eip_get_stats,
 	.ndo_set_multicast_list = eip_set_multicast_list,
 	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_mac_address 	= eth_mac_addr,
 	.ndo_change_mtu		= eth_change_mtu,
 #ifdef CONFIG_NET_POLL_CONTROLLER
 	.ndo_poll_controller 	= eip_poll,