[clang] [OpenMP][ASan][Driver] Update build steps for OpenMP ASan. (PR #179636)

[Amit Kumar Pandey via cfe-commits]

ampandey-1995 wrote:

Downstream [PR ](https://github.com/ROCm/llvm-project/pull/1334/) . Currently some files in downstream PR are not upstreamed because they require other emissary api's to be upstreamed and are non-asan related.

https://github.com/llvm/llvm-project/pull/179636