Inc52c206e26&32059d7414the USB code was changed to use the Zephyr native net_ prefixed API, but some were forgotten (nto[hn][ls]()). Let's change it now. Without this fix/change the code still builds as we are by now setting CONFIG_NET_NAMESPACE_COMPAT_MODE. But when this is not set, things fail to build. Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>