[llvm] [llc] Provide `opt` like verifier options (PR #106665)

[via llvm-commits]

paperchalice wrote:

> Does this mean that -verify-machineinstrs didn't actually do anything for new PM runs?

`llvm::getCGPassBuilderOption()` in TargetPassConfig.cpp catches the value of `verify-machineinstrs` but it is not used in codegen pipeline.

https://github.com/llvm/llvm-project/pull/106665