[llvm] Reorganise tests for using SLEEF symbols in LV. (PR #68207)

[via llvm-commits]

JolantaJensen wrote:

I don't think the failure has anything with my tests to do:

```
c:\ws\src\build\bin\clang.exe -### --hipstdpar C:\ws\src\build\tools\clang\test\Driver\Output\hipstdpar.c.tmp.o 2>&1 \| c:\ws\src\build\bin\filecheck.exe --check-prefix=HIPSTDPAR-LINK C:\ws\src\clang\test\Driver\hipstdpar.c
C:\ws\src\clang\test\Driver\hipstdpar.c:17:20: error: HIPSTDPAR-LINK: expected string not found in input
.---command stderr------------
# | // HIPSTDPAR-LINK: "-rpath"
```

https://github.com/llvm/llvm-project/pull/68207