release/22.x: [openmp] Allow testing OpenMP in runtimes builds without a full clang build tree#183054

dyung merged 1 commit intollvm:release/22.xllvm/llvm-project:release/22.xfrom

mstorsjo:openmp-test-clang-22.xmstorsjo/llvm-project:openmp-test-clang-22.xCopy head branch name to clipboard