[clang] [driver] mark offload.f90 as REQUIRES: openmp_runtime (PR #181759)

[Joseph Huber via cfe-commits]

https://github.com/jhuber6 requested changes to this pull request.

What's the issue you are seeing? This isn't intended to depend on anything outside of the test directory, hence the usage of `-resource-dir` and `--rocm-path` so this fix is undesirable. It would be better to fix whatever problem you have directly.

https://github.com/llvm/llvm-project/pull/181759