message: Add support for quantization of expand_dims.
diff: @@ -86,6 +86,12 @@ OperatorProperty GetOperatorProperty(const BuiltinOperator& op) {
  // Comparisons have no quantizable outputs.
  property.version = 2;
  break;
  + case BuiltinOperator_EXPAND_DIMS:
  + property.inputs = {{0, {}}, {1, {}}};
  + property.outputs = {{0, {}}};
  + property.restrict_same_input_output_scale = true;
  + property.version = 1;
  + break;
  case BuiltinOperator_FULLY_CONNECTED: {
  TensorProperty tensor_property;
  tensor_property.symmetric = true;
  