message: Adding padding_list in mkl quantized conv2d
diff: @@ -1229,6 +1229,7 @@ REGISTER_OP("_MklQuantizedConv2DPerChannel")
  .Attr("is_filter_const: bool = false")
  .Attr(GetPaddingAttrString())
  .Attr("dilations: list(int) = [1, 1, 1, 1]")
  + .Attr("padding_list: list(int) = []")
  .SetShapeFn([](InferenceContext* c) {
  TF_RETURN_IF_ERROR(shape_inference::Conv2DShape(c));
  ShapeHandle unused, channel;
  