net: dsa: lantiq_gswip: use simple HSR offload helpers

Both the "gswip" and "gsw1xx" protocols use dsa_xmit_port_mask(), so
they are compatible with accelerating TX packet duplication for HSR
rings.

Enable that feature by setting the port_hsr_join() and port_hsr_leave()
operations to the simple helpers provided by DSA.

Cc: Hauke Mehrtens <[email protected]>
Cc: Daniel Golle <[email protected]>
Signed-off-by: Vladimir Oltean <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: vladimiroltean

drivers/net/dsa/lantiq/lantiq_gswip_common.c

@@ -1652,6 +1652,8 @@ static const struct dsa_switch_ops gswip_switch_ops = {
 	.get_sset_count		= gswip_get_sset_count,
 	.set_mac_eee		= gswip_set_mac_eee,
 	.support_eee		= gswip_support_eee,
+	.port_hsr_join		= dsa_port_simple_hsr_join,
+	.port_hsr_leave		= dsa_port_simple_hsr_leave,
 };
 
 void gswip_disable_switch(struct gswip_priv *priv)