mlxsw: spectrum: Set physical device for port netdevice

Do this so the sysfs has "device" link correctly set.
Signed-off-by: NJiri Pirko <jiri@mellanox.com>
Reviewed-by: NIdo Schimmel <idosch@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/spectrum.c

@@ -2222,6 +2222,7 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 	dev = alloc_etherdev(sizeof(struct mlxsw_sp_port));
 	if (!dev)
 		return -ENOMEM;
+	SET_NETDEV_DEV(dev, mlxsw_sp->bus_info->dev);
 	mlxsw_sp_port = netdev_priv(dev);
 	mlxsw_sp_port->dev = dev;
 	mlxsw_sp_port->mlxsw_sp = mlxsw_sp;