[llvm] [AVR] Force relocations for non-encodable jumps (PR #121498)

[Patryk Wychowaniec via llvm-commits]

Patryk27 wrote:

Alright, I've minimized the pull request - now it only contains changes regarding the relative jumps; other things will be extracted into separate PRs.

https://github.com/llvm/llvm-project/pull/121498