IVGCVSW-4209 Create a public API for the ArmNN Utils

 * Moved the relevant armnnUtils headers to the new location:
   include/armnnUtils
 * Update the header usage throughout the source code

!android-nn-driver:2387

Signed-off-by: Matteo Martincigh <matteo.martincigh@arm.com>
Change-Id: I2ba15cebcacafad2b5a1a7b9c3312ffc585e09d6
diff --git a/src/backends/reference/workloads/Resize.hpp b/src/backends/reference/workloads/Resize.hpp
index 8bd8999..4c35794 100644
--- a/src/backends/reference/workloads/Resize.hpp
+++ b/src/backends/reference/workloads/Resize.hpp
@@ -6,9 +6,10 @@
 #pragma once
 
 #include "BaseIterator.hpp"
+
 #include <armnn/Tensor.hpp>
 
-#include <DataLayoutIndexed.hpp>
+#include <armnnUtils/DataLayoutIndexed.hpp>
 
 namespace armnn
 {
@@ -20,4 +21,4 @@
             armnnUtils::DataLayoutIndexed dataLayout = DataLayout::NCHW,
             ResizeMethod                  resizeMethod = ResizeMethod::NearestNeighbor);
 
-} //namespace armnn
+} // namespace armnn