[llvm] [OFFLOAD] Restore interop functionality (PR #161429)

[Jan Patrick Lehr via llvm-commits]

jplehr wrote:

As Alex said, I ran this through local testing on AMD. It resulted in the same behavior as we were observing originally.
I did not test this on Nvidia. Is this something that you can help with @jhuber6? This is regarding the `interop.c` test.

https://github.com/llvm/llvm-project/pull/161429