[llvm] [CodeGen] Port PrintMIR to new pass manager (PR #79440)

[Arthur Eubanks via llvm-commits]

https://github.com/aeubanks commented:

if we're really committed to the idea of keeping around the free machine function pass, then I'm ok with splitting module and function MIR printing since it's mostly a debugging thing anyway

I'd like to see if we can remove doInitialization/doFinalization

https://github.com/llvm/llvm-project/pull/79440