[clang] [Clang][OpenMP] Fix multi arch compilation for -march option (PR #92290)

[Saiyedul Islam via cfe-commits]

saiislam wrote:

It will fix tests like: [targetid_multi_image](https://github.com/ROCm/aomp/tree/aomp-dev/test/smoke/targetid_multi_image)

https://github.com/llvm/llvm-project/pull/92290