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

[Fangrui Song via cfe-commits]

https://github.com/MaskRay requested changes to this pull request.

We need a test to clang/test/Driver/ohos.c similar to linux-ld.c clang_rt.crtbegin.o.

You can add UNSUPPORTED: system-windows to ohos.c so that we don't need backslashes.

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