[llvm] [OFFLOAD] Extend olMemRegister API to handle cases when a memory block may have been mapped outside of liboffload. (PR #172226)

[via llvm-commits]

fineg74 wrote:

> In general, the changes LGTM but there is still two issues opened.

I refactored the code to eliminate 2 functions in question so I believe all issues have been addressed now

https://github.com/llvm/llvm-project/pull/172226