[llvm] [LLVM] Volunteer myself as a secondary maintainer for LoopVectorizer (PR #120704)

[Paul Walker via llvm-commits]

paulwalker-arm wrote:

@fhahn - If you're happy to accept @david-arm as a maintainer than please reopen and accept the PR. As it stand we're assuming this is not the case, which we're fine with, but it would be unfortunate for Dave to miss out if it's just a case of you missing an email notification.

https://github.com/llvm/llvm-project/pull/120704