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

[Aiden Grossman via llvm-commits]

https://github.com/boomanaiden154 approved this pull request.

LGTM.

We discussed this offline and there are no good test candidates for this pass. The only one is `llvm/test/CodeGen/X86/win64-eh-empty-block-2.mir`, but it runs all the way through CodeGen, so more porting work needs to be done before then.

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