message: camera: make printf a bit more informative
diff: @@ -436,7 +436,7 @@ bool CameraDefinition::get_option_value(const std::string &param_name,
  MAVLinkParameters::ParamValue &value)
  {
  if (_parameter_map.find(param_name) == _parameter_map.end()) {
  - LogErr() << "Unknown parameter to get option";
  + LogErr() << "Unknown parameter to get option: " << param_name;
  return false;
  }
  