[llvm] [AsmPrinter][DebugNames] Implement DW_IDX_parent entries (PR #77457)

[Felipe de Azevedo Piovezan via llvm-commits]

felipepiovezan wrote:

I believe all feedback has been addressed for now, please let me know if there are other concerns with the patch!

https://github.com/llvm/llvm-project/pull/77457