net: dsa: switch: Don't add CPU port to an mdb by default

Now that the host indicates when a multicast group should be forwarded
from the switch to the host, don't do it by default.
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/dsa/switch.c

@@ -121,7 +121,7 @@ static int dsa_switch_mdb_add(struct dsa_switch *ds,
 	if (ds->index == info->sw_index)
 		set_bit(info->port, group);
 	for (port = 0; port < ds->num_ports; port++)
-		if (dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))
+		if (dsa_is_dsa_port(ds, port))
 			set_bit(port, group);
 
 	if (switchdev_trans_ph_prepare(trans)) {