[clang] [AMDGPU][clang] Fix clang driver check for multiple sanitizer arguments (PR #166851)

[Thorsten Blaß via cfe-commits]

https://github.com/ThorBl commented:

I just noticed that -fsanitize-coverage flags on the device path are not handled yet. Users can still pass -fsanitize-coverage=… explicitly. These should be filtered for amdgcn device jobs with per-flag diagnostics, and tests should verify that no coverage flags reach the device cc1.

https://github.com/llvm/llvm-project/pull/166851