[clang] Reapply "[Driver][OHOS] Fix lld link issue for OHOS (#118192)" (PR #120159)

[Fangrui Song via cfe-commits]

MaskRay wrote:

This patch is reverted.

We can disable the test on -DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=OFF layouts, but I don't find a lit feature that.

The usual way is to create a compiler-rt file hierarchy under Inputs. Just fd libclang_rt.builtins.a for some examples.

https://github.com/llvm/llvm-project/pull/120159