[clang] [Clang] Make `-Xarch_` handling generic for all toolchains (PR #125421)

[Artem Belevich via cfe-commits]

Artem-B wrote:

> Right now it works as I'd expect, it passes --offload-arch=sm_52 to the sm_52 compilation, but no other architecture.

What happens with that `--offload-arch=sm_52` when cc1 sees it?
Ideally there should be either an unused argument warning, or an error is the option is not accepted by cc1. Currently cc1 errors out with `error: unknown argument: '--offload-arch=sm_52`. If it continues to do so with your change, then we're fine.

https://github.com/llvm/llvm-project/pull/125421