[llvm] [M68k] add 32 bit branch instrs and relaxations (PR #117371)

[John Paul Adrian Glaubitz via llvm-commits]

glaubitz wrote:

@knickish Your change has made the buildbot unhappy, unfortunately: https://lab.llvm.org/buildbot/#/builders/27/builds/3331

Can you have a look?

https://github.com/llvm/llvm-project/pull/117371