[clang] [clang][Driver][AVR] Reject c/c++ compilation for avr1 devices (PR #111798)

[Ben Shi via cfe-commits]

benshi001 wrote:

> Please add a release note in https://clang.llvm.org/docs/ReleaseNotes.html#avr-support (`clang/docs/ReleaseNotes.rst`).
> 
> Otherwise, this looks good to me.

The note is added. Thanks!

https://github.com/llvm/llvm-project/pull/111798