[clang] [X86] Fix Wrong type in builtin prototype (PR #182242)

[Aaron Ballman via cfe-commits]

AaronBallman wrote:

> > Is this a case where it makes more sense to make tablegen smarter about vector types (so this kind of mistake is caught and we don't decompose to less type information with `void *`) than to switch to `void *`?
> > Marking as requesting changes given there's quite a few questions around this PR at the moment.
> 
> If i understand correctly you are in favour of making `Vector<size, type> *` style in tablegen which provides more information about type of pointer and current `Vector<size, type *>` carries no semantic meaning by design. is that correct?

Correct

https://github.com/llvm/llvm-project/pull/182242