IVGCVSW-4261 Add backward compatibility to the Backend API

 * Redirect the backendsCommon headers to the new headers
   in armnn/backends

Signed-off-by: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
Change-Id: I53424a16b378e50a20cf1e3f7f8e9ea477fed52f
diff --git a/src/backends/backendsCommon/DynamicBackend.hpp b/src/backends/backendsCommon/DynamicBackend.hpp
new file mode 100644
index 0000000..a76d156
--- /dev/null
+++ b/src/backends/backendsCommon/DynamicBackend.hpp
@@ -0,0 +1,9 @@
+//
+// Copyright © 2019 Arm Ltd. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+// This file is depricated and will be removed soon.
+// Please use the new header in armnn/backends instead.
+// This will use the new armnn/backends header.
+#include <armnn/backends/DynamicBackend.hpp>