[llvm] [CodeGen][NewPM] Port `machine-block-freq` to new pass manager (PR #98317)

[via llvm-commits]

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+; RUN: llc -mtriple=x86_64-linux-gnu -stop-after=x86-isel %s -o - | llc --passes='print<machine-block-freq>' -x mir -o - 2>&1 | FileCheck %s
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paperchalice wrote:

Convert to MIR test for now. Because ideally these test should stay in `test/CodeGen/Generic`, but I couldn't find a good way to write a generic test, `llc` may crash with its output on some targets.

https://github.com/llvm/llvm-project/pull/98317