[llvm] [Hexagon] Update InstrInfo to include LD/ST offsets of vector instructions (PR #82386)

[Brian Cain via llvm-commits]

androm3da wrote:

> > This appears to have fixed the issues in Halide, thanks!
> 
> Yes. I will merge this and re-push the PostIncOpt pass. Thanks for flagging the issue.

@sgundapa can we run the halide test(s) that were raised by @steven-johnson while the `PostIncOpt` pass is under review to make sure when that re-apply lands that it will work?

https://github.com/llvm/llvm-project/pull/82386