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

Change-Id: I663a0a0fccb43ee960ec070121a59df9db0bb04e
diff --git a/src/backends/reference/workloads/RefActivationFloat32Workload.hpp b/src/backends/reference/workloads/RefActivationFloat32Workload.hpp
index 73be6b0..dd65697 100644
--- a/src/backends/reference/workloads/RefActivationFloat32Workload.hpp
+++ b/src/backends/reference/workloads/RefActivationFloat32Workload.hpp
@@ -5,7 +5,7 @@
 
 #pragma once
 
-#include <backends/Workload.hpp>
+#include <backendsCommon/Workload.hpp>
 
 namespace armnn
 {