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/functions/CLScharr3x3.cpp b/src/runtime/CL/functions/CLScharr3x3.cpp
index c8bc465..73f8673 100644
--- a/src/runtime/CL/functions/CLScharr3x3.cpp
+++ b/src/runtime/CL/functions/CLScharr3x3.cpp
@@ -24,8 +24,8 @@
 #include "arm_compute/runtime/CL/functions/CLScharr3x3.h"
 
 #include "arm_compute/core/CL/kernels/CLScharr3x3Kernel.h"
-#include "arm_compute/core/Helpers.h"
 #include "arm_compute/core/PixelValue.h"
+#include "support/ToolchainSupport.h"
 
 #include <utility>
 
@@ -33,7 +33,7 @@
 
 void CLScharr3x3::configure(ICLTensor *input, ICLTensor *output_x, ICLTensor *output_y, BorderMode border_mode, uint8_t constant_border_value)
 {
-    auto k = arm_compute::cpp14::make_unique<CLScharr3x3Kernel>();
+    auto k = arm_compute::support::cpp14::make_unique<CLScharr3x3Kernel>();
     k->configure(input, output_x, output_y, border_mode == BorderMode::UNDEFINED);
     _kernel = std::move(k);
     _border_handler.configure(input, _kernel->border_size(), border_mode, PixelValue(constant_border_value));