[clang] [Clang][TableGen] Use PointerType::get(Context) in MVE TableGen emitter (NFC) (PR #124782)

[Nikita Popov via cfe-commits]

https://github.com/nikic approved this pull request.

LGTM

> I don't know if directly using the CodeGenModule here is the best solution. Let me know if there's something better to use.

I think that's ok. The alternative would be Builder.getContext().

https://github.com/llvm/llvm-project/pull/124782