net: bridge: use eth_broadcast_addr() to assign broadcast address

This patch is to use eth_broadcast_addr() to assign broadcast address
insetad of memset().
Signed-off-by: Mao Wenan <maowenan@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/bridge/br_multicast.c

@@ -517,7 +517,7 @@ struct net_bridge_port_group *br_multicast_new_port_group(
 	if (src)
 		memcpy(p->eth_addr, src, ETH_ALEN);
 	else
-		memset(p->eth_addr, 0xff, ETH_ALEN);
+		eth_broadcast_addr(p->eth_addr);
 
 	return p;
 }