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/ewrk3.c b/drivers/net/ewrk3.c
index dd4ba01..96817a8 100644
--- a/drivers/net/ewrk3.c
+++ b/drivers/net/ewrk3.c
@@ -1213,7 +1213,7 @@
 		}
 
 		/* Update table */
-		for (i = 0; i < dev->mc_count; i++) {	/* for each address in the list */
+		for (i = 0; i < netdev_mc_count(dev); i++) {	/* for each address in the list */
 			addrs = dmi->dmi_addr;
 			dmi = dmi->next;
 			if ((*addrs & 0x01) == 1) {	/* multicast address? */