[llvm] [AVR] Fix parsing & emitting relative jumps (PR #102936)

[Patryk Wychowaniec via llvm-commits]

Patryk27 wrote:

Makes sense, one more thing:

> Also note that you may want to create two separate PRs, one for each commit, unless you want to squash then ("rebase and merge" has been disabled).

I'm not sure I follow - what does `rebase and merge` have to do with multi-commit pull requests? 🤔 

https://github.com/llvm/llvm-project/pull/102936