message: pcm-iio: check for opCode.txt also in /usr/share/pcm/
diff: @@ -338,7 +338,13 @@ vector<struct counter> load_events(const char* fn)
  std::string line, item;
  if (!in.is_open())
  + {
  + in.open(std::string("/usr/share/pcm/") + fn);
  + if (!in.is_open())
  + {
  throw std::invalid_argument("event file is not avaiable. In the future version, we will load a preset");
  + }
  + }
  while (std::getline(in, line)) {
  /* Ignore anyline with # */
  