logitech-hidpp: Use UNREACHABLE rather than modifying UPDATABLE
logitech-hidpp: Use UNREACHABLE rather than modifying UPDATABLE

hughsie/fwupd,hughsie/fwupd,fwupd/fwupd,hughsie/fwupd,fwupd/fwupd,hughsie/fwupd,fwupd/fwupd,fwupd/fwupd