[llvm] AMDGPU/NewPM: Fill out addPreISelPasses (PR #102814)

[Matt Arsenault via llvm-commits]

arsenm wrote:

### Merge activity

* **Aug 14, 12:49 PM EDT**: @arsenm started a stack merge that includes this pull request via [Graphite](https://app.graphite.dev/github/pr/llvm/llvm-project/102814).


https://github.com/llvm/llvm-project/pull/102814