[llvm] [llvm] Add serialization to uint32_t for FixedPointSemantics (PR #110288)

[Bevin Hansson via llvm-commits]

https://github.com/bevin-hansson approved this pull request.

LGTM, though I'm unsure of any future consequences of making it part of a versioned interface, if that's the intention.

https://github.com/llvm/llvm-project/pull/110288