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

[Hansang Bae via llvm-commits]

hansangbae wrote:

Closing this one in favor of Alex's new implementation in #165416, #170265, #170425.
Updates in the remaining parts continue in #171672, #171683, #171684.

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