[llvm] [X86] [NewPM] Add New Pass Manager wiring for x86-avoid-trailing-call (PR #166723)

[Anshul Nigham via llvm-commits]

nigham wrote:

> Sorry, a couple nits I didn't spot initially:
> 
> 1. Code formatting. Running `git clang-format HEAD~1` locally should fix all those.
> 2. LLVM commits are conventionally tagged in the title with square brackets. Prefixing the current title with `[X86][NewPM]` I think should be sufficient.

Thanks for the quick review! Done.

https://github.com/llvm/llvm-project/pull/166723