IVGCVSW-1946: Remove armnn/src from the include paths

Change-Id: I663a0a0fccb43ee960ec070121a59df9db0bb04e
diff --git a/src/backends/cl/workloads/CMakeLists.txt b/src/backends/cl/workloads/CMakeLists.txt
index 86c3804..901dd74 100644
--- a/src/backends/cl/workloads/CMakeLists.txt
+++ b/src/backends/cl/workloads/CMakeLists.txt
@@ -61,6 +61,6 @@
 )
 
 add_library(armnnClBackendWorkloads OBJECT ${armnnClBackendWorkloads_sources})
-target_include_directories(armnnClBackendWorkloads PRIVATE ${PROJECT_SOURCE_DIR}/src)
 target_include_directories(armnnClBackendWorkloads PRIVATE ${PROJECT_SOURCE_DIR}/src/armnn)
 target_include_directories(armnnClBackendWorkloads PRIVATE ${PROJECT_SOURCE_DIR}/src/armnnUtils)
+target_include_directories(armnnClBackendWorkloads PRIVATE ${PROJECT_SOURCE_DIR}/src/backends)