[llvm] [lit] Refactor available `ptxas` features (PR #154439)

[Vladimir Vereschaka via llvm-commits]

vvereschaka wrote:

Hi @justinfargnoli ,

https://lab.llvm.org/buildbot/#/builders/54/builds/12220

```
llvm-lit.py: C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\utils\lit\lit\llvm\config.py:57: note: using lit tools: C:\Program Files\Git\usr\bin
llvm-lit.py: C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\utils\lit\lit\TestingConfig.py:157: fatal: unable to parse config file 'C:\\buildbot\\as-builder-8\\llvm-nvptx-nvidia-win\\llvm-project\\llvm\\test/lit.cfg.py', traceback: Traceback (most recent call last):
  File "C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\utils\lit\lit\TestingConfig.py", line 145, in load_from_path
    exec(compile(data, path, "exec"), cfg_globals, None)
  File "C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test/lit.cfg.py", line 438, in <module>
    enable_ptxas(ptxas_executable)
  File "C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test/lit.cfg.py", line 430, in enable_ptxas
    if ptxas_supports_address_size_32(ptxas_executable):
  File "C:\buildbot\as-builder-8\llvm-nvptx-nvidia-win\llvm-project\llvm\test/lit.cfg.py", line 407, in ptxas_supports_address_size_32
    raise RuntimeError(f"Unexpected ptxas output: {result.stderr}")
RuntimeError: Unexpected ptxas output: 
```
same for https://lab.llvm.org/buildbot/#/builders/155

would you take care of it?

https://github.com/llvm/llvm-project/pull/154439