[llvm] [mlir] [llvm][DebugInfo] Add new DW_AT_APPLE_enum_kind to encode enum_extensibility (PR #124752)

[Michael Buch via llvm-commits]

Michael137 wrote:

@tromey btw i put up https://github.com/llvm/llvm-project/pull/132374 which fixes this with a test

https://github.com/llvm/llvm-project/pull/124752