Add sample app for asynchronous execution

Signed-off-by: Jan Eilers <jan.eilers@arm.com>
Change-Id: I6d903c721d71a28bc02e4e98aaa813fb9159b678
diff --git a/samples/CMakeLists.txt b/samples/CMakeLists.txt
index 7be6a69..7af8b72 100644
--- a/samples/CMakeLists.txt
+++ b/samples/CMakeLists.txt
@@ -1,6 +1,9 @@
 if(BUILD_SAMPLE_APP AND ARMNNREF)
     add_executable(SimpleSample SimpleSample.cpp)
     target_link_libraries(SimpleSample armnn ${CMAKE_THREAD_LIBS_INIT})
+
+    add_executable(AsyncExecutionSample AsyncExecutionSample.cpp)
+    target_link_libraries(AsyncExecutionSample armnn ${CMAKE_THREAD_LIBS_INIT})
 endif()
 
 if(BUILD_SAMPLE_APP AND SAMPLE_DYNAMIC_BACKEND)