[clang] [CMAKE][AMDGPU] fix build failure caused by PR #133619 (PR #133776)

[Arvind Sudarsanam via cfe-commits]

https://github.com/asudarsa commented:

I tried to build it locally and I got a series of 'undefined reference' errors. Sorry, I will need to revert my approval.

Thanks

https://github.com/llvm/llvm-project/pull/133776