message: Fixed work group selection for mean.
diff: @@ -35,6 +35,15 @@ Mean::Mean(const OperationDef& definition, const DeviceInfo& device_info)
  if (device_info.IsAdreno3xx()) {
  work_group_size_ = int3(16, 8, 1);
  }
  + if (device_info.IsMali()) {
  + const MaliInfo& mali_info = device_info.mali_info;
  + if (mali_info.IsMaliT6xx() || mali_info.IsMaliT7xx() ||
  + mali_info.IsMaliT8xx()) {
  + work_group_size_ = int3(8, 4, 1);
  + } else {
  + work_group_size_ = int3(8, 8, 1);
  + }
  + }
  code_ = GetMeanKernelCode(definition_, work_group_size_);
  }
  