Driver unit tests

Add driver unit tests that runs simple command streams directly
on top of the NPU driver.

Change-Id: I3fcce2a2bfbd458d14186b8fd13ba47174f49562
diff --git a/applications/CMakeLists.txt b/applications/CMakeLists.txt
index 291643f..154b599 100644
--- a/applications/CMakeLists.txt
+++ b/applications/CMakeLists.txt
@@ -16,12 +16,14 @@
 # limitations under the License.
 #
 
+add_subdirectory(baremetal)
+
+add_subdirectory(driver_unit_tests)
+
 add_subdirectory(freertos)
 
 add_subdirectory(hello_world)
 
-add_subdirectory(baremetal)
-
 if (CMAKE_CXX_COMPILER_ID STREQUAL "ARMClang")
     # Only armclang supported for now
     add_subdirectory(trustzone_inference)