[llvm] AMDGPU/NewPM: Fill out passes in addCodeGenPrepare (PR #102867)

[Matt Arsenault via llvm-commits]

arsenm wrote:

> I mean every single person who is listed in CODEOWNERS being added as a reviewer to pull requests like this one. This seems to happen all the time (but not _every_ time...) with graphite.

I've noticed this happen twice, and both involved reorders. The last time I noticed this, I accidentally pushed a bunch of explicit commits in the branch. This time, that didn't happen. However this time I did have one other PR (which I later abandoned) not get updated along with the reorder. So my current guess is the autolabeler is mishandling the case where the reorder has another open branch that isn't updated in the batch 

https://github.com/llvm/llvm-project/pull/102867