[clang] [Clang][CMake] Support perf, LBR, and Instrument CLANG_BOLT options (PR #69133)

[via cfe-commits]

dyung wrote:

@aaupov I believe this change is somehow causing cmake failures on several bots I oversee, although I cannot explain why it passed when building your commit. For example:

https://lab.llvm.org/buildbot/#/builders/139/builds/57628
```
CMake Error at /home/buildbot/buildbot-root/llvm-clang-x86_64-sie-ubuntu-fast/llvm-project/clang/utils/perf-training/CMakeLists.txt:105 (add_custom_target):
  Error evaluating generator expression:
    $<TARGET_FILE:merge-fdata>
  No target "merge-fdata"
```
Any idea what might be going wrong here?

https://github.com/llvm/llvm-project/pull/69133