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/fs_enet/mac-scc.c b/drivers/net/fs_enet/mac-scc.c
index 008cdd9..141dbc9 100644
--- a/drivers/net/fs_enet/mac-scc.c
+++ b/drivers/net/fs_enet/mac-scc.c
@@ -213,7 +213,7 @@
 
 	/* if all multi or too many multicasts; just enable all */
 	if ((dev->flags & IFF_ALLMULTI) != 0 ||
-	    dev->mc_count > SCC_MAX_MULTICAST_ADDRS) {
+	    netdev_mc_count(dev) > SCC_MAX_MULTICAST_ADDRS) {
 
 		W16(ep, sen_gaddr1, 0xffff);
 		W16(ep, sen_gaddr2, 0xffff);