[llvm] [LLVM-Test] Fix a regression in test dependencies introduced by 0e14973 (PR #161623)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-ppc64le-linux-multistage` running on `ppc64le-clang-multistage-test` while building `llvm` at step 4 "build stage 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/76/builds/13060

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 4 (build stage 1) failure: 'ninja' (failure) (timed out)
...
[380/6535] Building CXX object lib/TableGen/CMakeFiles/LLVMTableGen.dir/TGParser.cpp.o
[381/6535] Building CXX object lib/TableGen/CMakeFiles/LLVMTableGen.dir/StringToOffsetTable.cpp.o
[382/6535] Building CXX object lib/TableGen/CMakeFiles/LLVMTableGen.dir/TGTimer.cpp.o
[383/6535] Linking CXX executable bin/llvm-PerfectShuffle
[384/6535] Linking CXX shared library lib/libLLVMDemangle.so.22.0git
[385/6535] Creating library symlink lib/libLLVMDemangle.so
[386/6535] Linking CXX shared library lib/libbenchmark.so.0.0.0
[387/6535] Creating library symlink lib/libbenchmark.so.0 lib/libbenchmark.so
[388/6535] Linking CXX shared module unittests/Support/DynamicLibrary/PipSqueak.so
[389/6535] Linking CXX shared module unittests/Support/DynamicLibrary/SecondLib.so
command timed out: 1200 seconds without output running [b'ninja'], attempting to kill
process killed by signal 9
program finished with exit code -1
elapsedTime=1408.956740

```

</details>

https://github.com/llvm/llvm-project/pull/161623