[clang] [llvm] [HLSL] Implement dot2add intrinsic (PR #131237)

[Farzon Lotfi via cfe-commits]

farzonl wrote:

If you run 
git checkout main
git pull
git checkout <your_branch>
git rebase main
git clang-format main

that will also work

https://github.com/llvm/llvm-project/pull/131237