[llvm] [AVR] Wrap out-of-bounds relative jumps (PR #118015)

[Michael Büsch via llvm-commits]

mbuesch wrote:

I get this behavior with recent rust-nightly in this completely empty project:

[attiny26test.tar.gz](https://github.com/user-attachments/files/18263935/attiny26test.tar.gz)

It does build and work fine with `nightly-2024-03-22`. See `rust-toolchain.toml`.

https://github.com/llvm/llvm-project/pull/118015