[TorchDynamo]: fused bias for cpu convolution path (#87050)
For aten.convolution CPU path, the bias always can be fused, so this PR adds a device check: if inputs' device is CPU, we will fuse it for a good performance.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/87050
Approved by: https://github.com/jgong5, https://github.com/jansel
