[llvm] [lldb] DEBUGINFOD based DWP acquisition for LLDB (PR #70996)

[Michał Górny via llvm-commits]

mgorny wrote:

Ah, sorry, I didn't notice that. We're not passing `LLVM_DIR` at all. LLDB is able to find installed LLVM & Clang via `PATH`, and that's all it needed.

https://github.com/llvm/llvm-project/pull/70996