[llvm-branch-commits] [CodeGen][NewPM] Plumb MCContext through buildCodeGenPipeline (PR #182794)

[Aiden Grossman via llvm-branch-commits]

https://github.com/boomanaiden154 created https://github.com/llvm/llvm-project/pull/182794

Otherwise we cannot create an MCStreamer without getting MMI, which we
cannot do until we have started running AsmPrinter without also plumbing
MMI through CodeGenPassBuilder.