net: use netdev_mc_count and netdev_mc_empty when appropriate

This patch replaces dev->mc_count in all drivers (hopefully I didn't miss
anything). Used spatch and did small tweaks and conding style changes when
it was suitable.

Jirka

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c
index 225f658..a057202 100644
--- a/drivers/net/ucc_geth.c
+++ b/drivers/net/ucc_geth.c
@@ -2031,7 +2031,8 @@
 
 			dmi = dev->mc_list;
 
-			for (i = 0; i < dev->mc_count; i++, dmi = dmi->next) {
+			for (i = 0; i < netdev_mc_count(dev);
+			     i++, dmi = dmi->next) {
 
 				/* Only support group multicast for now.
 				 */