[clang] [Headers][X86] Add constexpr support for some AVX[512] intrinsics. (PR #156567)

[Simon Pilgrim via cfe-commits]

RKSimon wrote:

> @RKSimon `git clang-format` doesn't report any formatting errors locally. Do you want me to manually apply the formatting patch suggested by the github-actions bot?

No I don't think those are necessary changes tbh.

https://github.com/llvm/llvm-project/pull/156567