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

[Andrzej Warzyński via llvm-commits]

banach-space wrote:

> Not entirely sure who to add as reviewers on this PR though!

To help move this forward, the [LLVM Developer Policy](https://llvm.org/docs/DeveloperPolicy.html#maintainers) states:

> The PR will be accepted so long as at least one maintainer in the same project vouches for their ability to perform the responsibilities and there are no explicit objections raised by the community.

@fhahn, as the sole maintainer for `LoopVectorize`, your input is needed to unblock this :) Thanks in advance!

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