[llvm] [VPlan] Support VPReverseVectorPointer in DataWithEVL vectorization (PR #113667)

[Mel Chen via llvm-commits]

https://github.com/Mel-Chen approved this pull request.

LGTM, but wait a few days to see if other reviewers have any opinions. 
I think merging it in next week should be better since today is Friday.:)

https://github.com/llvm/llvm-project/pull/113667