[clang] [llvm] [Hexagon] Set the default compilation target to V68 (PR #125239)

[Brian Cain via cfe-commits]

androm3da wrote:

> Done. Thanks Brian.

Are you sure the release notes change has landed?  I don't see a commit on `main` with it yet.

https://github.com/llvm/llvm-project/blob/main/llvm/docs/ReleaseNotes.md#changes-to-the-hexagon-backend

Is there a pull req open for this change?

https://github.com/llvm/llvm-project/pull/125239