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/cris/eth_v10.c b/drivers/net/cris/eth_v10.c
index a24be34..c9309ea 100644
--- a/drivers/net/cris/eth_v10.c
+++ b/drivers/net/cris/eth_v10.c
@@ -1564,7 +1564,7 @@
 set_multicast_list(struct net_device *dev)
 {
 	struct net_local *lp = netdev_priv(dev);
-	int num_addr = dev->mc_count;
+	int num_addr = netdev_mc_count(dev);
 	unsigned long int lo_bits;
 	unsigned long int hi_bits;