[clang] [AArch64] Add missing Neon Types (PR #126945)

[David Green via cfe-commits]

davemgreen wrote:

> LGTM with one nitpick. I've run this through a fuzzer which tests ABI compatibility with GCC and didn't find any problems.

Thanks for the review and the extra testing!

https://github.com/llvm/llvm-project/pull/126945