nfp: pass switch ID through devlink_port_attrs_set()

Pass the switch ID down the to devlink through devlink_port_attrs_set()
so it can be used by devlink_compat_switch_id_get().
Signed-off-by: NJiri Pirko <jiri@mellanox.com>
Reviewed-by: NJakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/netronome/nfp/nfp_devlink.c

@@ -354,6 +354,8 @@ int nfp_devlink_port_register(struct nfp_app *app, struct nfp_port *port)
 {
 	struct nfp_eth_table_port eth_port;
 	struct devlink *devlink;
+	const u8 *serial;
+	int serial_len;
 	int ret;
 
 	rtnl_lock();
@@ -362,9 +364,10 @@ int nfp_devlink_port_register(struct nfp_app *app, struct nfp_port *port)
 	if (ret)
 		return ret;
 
+	serial_len = nfp_cpp_serial(port->app->cpp, &serial);
 	devlink_port_attrs_set(&port->dl_port, DEVLINK_PORT_FLAVOUR_PHYSICAL,
 			       eth_port.label_port, eth_port.is_split,
-			       eth_port.label_subport, NULL, 0);
+			       eth_port.label_subport, serial, serial_len);
 
 	devlink = priv_to_devlink(app->pf);