[clang] [SYCL][SPIR-V Backend][clang-sycl-linker] Add SPIR-V backend support inside clang-sycl-linker (PR #133967)

[Arvind Sudarsanam via cfe-commits]

asudarsa wrote:

@sarnex, @jhuber6 

Thanks much for your kind feedbacks. This is ready to be merged. Can one of you please help?

Sincerely

https://github.com/llvm/llvm-project/pull/133967