message: Add IPU HW specific option
  Summary:
  Fixes T4256
  Add sendSyncId to options for IPU
  Test Plan:
  All tests pass, ran on hardware and there was a speedup - tested with
  poplar
  Reviewers: jamesn
  Maniphest Tasks: T4256
diff: @@ -363,6 +363,12 @@ Status PoplarExecutor::ConfigurePoplarDevice(
  option_flags_ = poplar::OptionFlags();
  option_flags_.set("target.textSectionSizeInBytes", "0xe000");
  option_flags_.set("target.workerStackSizeInBytes", "0x200");
  +
  + // Device specific options
  + if (type == tensorflow::IPUOptions::DeviceConfig::IPU) {
  + option_flags_.set("target.sendSyncId", "true");
  + }
  +
  for (const auto& opt : cfg.compilation_options()) {
  option_flags_.set(opt.option(), opt.value());
  }
  