[llvm] [X86][AVX-VNNI] Fix VNNI intrinsics argument types (PR #122649)

[via llvm-commits]

BaiXilin wrote:

> Need to handle the old signature in llvm/lib/IR/Autoupgrade.cpp too

Thank you for the feedback! To clarify, I should update `AutoUpgrade.cpp` such that the old signatures' input arguments are casted to match the correct types in the intrinsics?

https://github.com/llvm/llvm-project/pull/122649