[llvm] [Offload] Add check-offload-unit to check-offload (PR #150230)

[Ross Brunton via llvm-commits]

================
@@ -75,3 +75,5 @@ add_lit_testsuite(check-offload-unit "Running offload unittest suites"
   ${CMAKE_CURRENT_BINARY_DIR}/unit
   EXCLUDE_FROM_CHECK_ALL
   DEPENDS LLVMOffload OffloadUnitTests)
+
+add_dependencies(check-offload check-offload-unit)
----------------
RossBrunton wrote:

This has the annoying side effect of making it so that the offload API tests are ran and then the "main" openmp tests. This means we don't get a single progress bar and failure list.

https://github.com/llvm/llvm-project/pull/150230