[clang] [Driver][X86] Add -m[no-]apxf to m_x86_Features_Group (PR #140874)

[Feng Zou via cfe-commits]

fzou1 wrote:

> Looks like this breaks tests on macOS: http://45.33.8.238/macm1/107398/step_6.txt
> 
> Please take a look and revert for now if it takes a while to fix.

Thank you. I've reproduced this issue on MacOS and updated PR #141486 to fix it.

https://github.com/llvm/llvm-project/pull/140874