[llvm] [AMDGPU][NewPM] Make the pass flow consistent with the legacy pipeline. (PR #136551)

[Christudasan Devadasan via llvm-commits]

cdevadas wrote:

### Merge activity

* **Apr 21, 6:02 AM EDT**: A user started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/136551).


https://github.com/llvm/llvm-project/pull/136551