[clang] [llvm] [x86][AVX-VNNI] Fix VPDPBUSD Argument Types (PR #155194)

[Simon Pilgrim via llvm-commits]

https://github.com/RKSimon requested changes to this pull request.

we usually include basic upgrade tests in CodeGen/X86 as well - but there should be an entry for every intrinsics we've changed - nothing as complex as msan - and it looks like we're missing avx_vnni-intrinsics-upgrade.ll entirely

https://github.com/llvm/llvm-project/pull/155194