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/CLChannelExtract.cpp b/src/runtime/CL/functions/CLChannelExtract.cpp
index 2c6174b..5090382 100644
--- a/src/runtime/CL/functions/CLChannelExtract.cpp
+++ b/src/runtime/CL/functions/CLChannelExtract.cpp
@@ -24,7 +24,7 @@
 #include "arm_compute/runtime/CL/functions/CLChannelExtract.h"
 
 #include "arm_compute/core/CL/kernels/CLChannelExtractKernel.h"
-#include "arm_compute/core/Helpers.h"
+#include "support/ToolchainSupport.h"
 
 #include <utility>
 
@@ -32,14 +32,14 @@
 
 void CLChannelExtract::configure(const ICLTensor *input, Channel channel, ICLTensor *output)
 {
-    auto k = arm_compute::cpp14::make_unique<CLChannelExtractKernel>();
+    auto k = arm_compute::support::cpp14::make_unique<CLChannelExtractKernel>();
     k->configure(input, channel, output);
     _kernel = std::move(k);
 }
 
 void CLChannelExtract::configure(const ICLMultiImage *input, Channel channel, ICLImage *output)
 {
-    auto k = arm_compute::cpp14::make_unique<CLChannelExtractKernel>();
+    auto k = arm_compute::support::cpp14::make_unique<CLChannelExtractKernel>();
     k->configure(input, channel, output);
     _kernel = std::move(k);
 }