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

[Feng Zou via cfe-commits]

fzou1 wrote:

> This patch broke the [Solaris/amd64 buildbot](https://lab.llvm.org/staging/#/builders/120/builds/8977). I suspect the test should use `--target=i386-pc-windows` instead of just `i386`?

Sorry for that. I've uploaded a PR (#141486) to fix that. But I didn't verify that since I don't have a machine with solaris OS and AMD CPU.

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