[clang] [lldb] [llvm] [AArch64][TargetParser] autogen ArchExtKind enum - renaming (PR #90320)

[David Green via cfe-commits]

davemgreen wrote:

Rust (https://github.com/rust-lang/rust/blob/79734f1db8dbe322192dea32c0f6b80ab14c4c1d/compiler/rustc_codegen_llvm/src/llvm_util.rs#L229) and zig (https://github.com/ziglang/zig/blob/44db92d1ca90c9cfdfb29fe46f04ff8f11c80901/lib/std/Target/aarch64.zig#L43) are two examples of what I meant by external dependencies. They can adapt, especially if there are release notes, but there may be many more projects out there using the old names and it would be good if they kept working, if we can.

https://github.com/llvm/llvm-project/pull/90320