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/lance.c b/drivers/net/lance.c
index 8d7d3d4..7b94476 100644
--- a/drivers/net/lance.c
+++ b/drivers/net/lance.c
@@ -1288,7 +1288,7 @@
 	} else {
 		short multicast_table[4];
 		int i;
-		int num_addrs=dev->mc_count;
+		int num_addrs=netdev_mc_count(dev);
 		if(dev->flags&IFF_ALLMULTI)
 			num_addrs=1;
 		/* FIXIT: We don't use the multicast table, but rely on upper-layer filtering. */