ONNX opset version

[saienduri]

We are seeing these issues related to opset version (onnx to torch support needed) in these models (llama2-7b-GPTQ, opt-125m-gptq). Repro instructions can be found here:

torch.onnx.errors.UnsupportedOperatorError: Exporting the operator 'aten::bitwise_right_shift' to ONNX opset version 17 is not supported. Please feel free to request support or submit a pull request on PyTorch GitHub: https://github.com/pytorch/pytorch/issues.

[AmosLewis]

This looks like a pytorch issue, not the torch-mlir issues. To solve this, we need to file a pytorch issuse as soon as possible here https://github.com/pytorch/pytorch/issues

[zjgarvey]

I got the pytorch PR for this merged here pytorch/pytorch#126229, so I'm going to close this issue.