net: use helpers to access uc list V2

This patch introduces three macros to work with uc list from net drivers.

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/e1000/e1000_main.c b/drivers/net/e1000/e1000_main.c
index 87f575c..2ce88c5 100644
--- a/drivers/net/e1000/e1000_main.c
+++ b/drivers/net/e1000/e1000_main.c
@@ -2139,7 +2139,7 @@
 			rctl |= E1000_RCTL_VFE;
 	}
 
-	if (netdev->uc.count > rar_entries - 1) {
+	if (netdev_uc_count(netdev) > rar_entries - 1) {
 		rctl |= E1000_RCTL_UPE;
 	} else if (!(netdev->flags & IFF_PROMISC)) {
 		rctl &= ~E1000_RCTL_UPE;
@@ -2162,7 +2162,7 @@
 	 */
 	i = 1;
 	if (use_uc)
-		list_for_each_entry(ha, &netdev->uc.list, list) {
+		netdev_for_each_uc_addr(ha, netdev) {
 			if (i == rar_entries)
 				break;
 			e1000_rar_set(hw, ha->addr, i++);