[llvm] Add patterns for Hexagon backend labels (PR #98068)

[Brian Cain via llvm-commits]

androm3da wrote:

> I've created the team. @androm3da @quic-akaryaki, do you want me to add you both as members.

yes please, and @SundeepKushwaha 

https://github.com/llvm/llvm-project/pull/98068