ocelot_flower: use flow_offload_has_one_action() helper

Instead of directly checking number of action entries, use
flow_offload_has_one_action() helper.

Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Acked-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mscc/ocelot_flower.c

@@ -14,7 +14,7 @@ static int ocelot_flower_parse_action(struct flow_cls_offload *f,
 	const struct flow_action_entry *a;
 	int i;
 
-	if (f->rule->action.num_entries != 1)
+	if (!flow_offload_has_one_action(&f->rule->action))
 		return -EOPNOTSUPP;
 
 	flow_action_for_each(i, a, &f->rule->action) {