COMPMID-417: Extract common toolchain support file

The support file is needed as Android toolchains are missing some C++11
functions. It further includes functions that have been introduced in
C++14 but which we already need.

Eventually the support file might become unnecessary if the Android
compilers improve and we switch to C++14.

Change-Id: Ib5ec506f1a17c78149c315ab2096b901b852c180
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/79247
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
Reviewed-by: Pablo Tello <pablo.tello@arm.com>
diff --git a/src/runtime/CL/CLMultiHOG.cpp b/src/runtime/CL/CLMultiHOG.cpp
index b9e8739..88d45ac 100644
--- a/src/runtime/CL/CLMultiHOG.cpp
+++ b/src/runtime/CL/CLMultiHOG.cpp
@@ -25,12 +25,12 @@
 
 #include "arm_compute/core/CL/ICLHOG.h"
 #include "arm_compute/core/Error.h"
-#include "arm_compute/core/Helpers.h"
+#include "support/ToolchainSupport.h"
 
 using namespace arm_compute;
 
 CLMultiHOG::CLMultiHOG(size_t num_models)
-    : _num_models(num_models), _model(arm_compute::cpp14::make_unique<CLHOG[]>(_num_models))
+    : _num_models(num_models), _model(arm_compute::support::cpp14::make_unique<CLHOG[]>(_num_models))
 {
 }