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

Change-Id: I663a0a0fccb43ee960ec070121a59df9db0bb04e
diff --git a/src/backends/reference/workloads/RefMeanUint8Workload.hpp b/src/backends/reference/workloads/RefMeanUint8Workload.hpp
index 21cf72b..f53b8a4 100644
--- a/src/backends/reference/workloads/RefMeanUint8Workload.hpp
+++ b/src/backends/reference/workloads/RefMeanUint8Workload.hpp
@@ -5,8 +5,8 @@
 
 #pragma once
 
-#include "backends/Workload.hpp"
-#include "backends/WorkloadData.hpp"
+#include "backendsCommon/Workload.hpp"
+#include "backendsCommon/WorkloadData.hpp"
 
 namespace armnn
 {