[clang] [llvm] [SYCL] Add clang-linker-wrapper changes to call clang-sycl-linker for SYCL offloads (PR #135683)

[Arvind Sudarsanam via llvm-commits]

asudarsa wrote:

Hi @jhuber6 

There are a couple of TODO comments in this PR:
1. Add sycl post link functionality (including device code splitting) - This PR is under review here - https://github.com/llvm/llvm-project/pull/131347
2. Add SYCL offload wrapping logic - We are working on submitting this PR. There is interdependency between current PR and the offload wrapping effort. One option is to merge the two efforts. However, I am hoping to reduce the complexity of each PR. Hope, that is agreeable.

I expect these TODOs to be wrapped up very soon.

Thanks 

https://github.com/llvm/llvm-project/pull/135683