[llvm] [Offload] Enable more refined debug printing (PR #163431)

[Alex Duran via llvm-commits]

adurang wrote:

> Honestly I would prefer this to be completely reworked to be more similar to how LLVM handles its debugging. This was mostly a holdover from before we just linked against LLVM for the runtime. I had a patch to do that years ago but never finished and I lost the diff.

Any pointers on that?

https://github.com/llvm/llvm-project/pull/163431