[llvm] Initialize aarch64-cond-br-tuning pass (PR #132087)

[Shubham Sandeep Rastogi via llvm-commits]

rastogishubham wrote:

I am not sure if I should add a test for this which will just use a -stop-after and make sure there are no errors, please let me know

https://github.com/llvm/llvm-project/pull/132087