net: dsa: bcm_sf2: Allow targeting CPU ports for CFP rules

ds->enabled_port_mask only contains a bitmask of user-facing enabled
ports, we also need to allow programming CFP rules that target CPU ports
(e.g: ports 5 and 8).
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/bcm_sf2_cfp.c

@@ -755,7 +755,8 @@ static int bcm_sf2_cfp_rule_set(struct dsa_switch *ds, int port,
 	port_num = fs->ring_cookie / SF2_NUM_EGRESS_QUEUES;
 
 	if (fs->ring_cookie == RX_CLS_FLOW_DISC ||
-	    !dsa_is_user_port(ds, port_num) ||
+	    !(dsa_is_user_port(ds, port_num) ||
+	      dsa_is_cpu_port(ds, port_num)) ||
 	    port_num >= priv->hw_params.num_ports)
 		return -EINVAL;
 	/*