[llvm] [clang] [LinkerWrapper] Support relocatable linking for offloading (PR #80066)

[Artem Belevich via llvm-commits]

Artem-B wrote:

So, the idea is to carry two separate embedded offloading sections -- one for already fully linked GPU executables, and another for GPU objects to be linked at the final link stage.

> We also use a sepcial section called something like omp_offloading_entries

Typo in 'special' in the description.


https://github.com/llvm/llvm-project/pull/80066