team: allow TSO being set on master

This patch allows TSO being set/unset on the master, so that GSO
segmentation is done after team layer.

Similar patch is present for bonding:
	b0ce350 ("bonding: allow TSO being set on bonding master")
and bridge:
	f902e88 ("bridge: Add ability to enable TSO")

Suggested-by: Jiri Prochazka <jprochaz@redhat.com>
Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/team/team.c

@@ -1937,6 +1937,9 @@ static netdev_features_t team_fix_features(struct net_device *dev,
 						     mask);
 	}
 	rcu_read_unlock();
+
+	features = netdev_add_tso_features(features, mask);
+
 	return features;
 }