IVGCVSW-5328-5329 Fuse Activation

 * Added Fused Activation Optimization to both CL and Neon backends.
 * Added Fused Activation support to all the CL and Neon workloads
   that support it.
 * Changed ProfilingTest network to be a Convolution layer
   followed by an Abs layer rather than an Activation layer.
 * Added IBackendInternal::OptimizeSubgraphView function that can accept a
   ModelOptions.
 * Network will now call OptimizeSubgraphView passing in the ModelOptions.

Signed-off-by: Keith Davis <keith.davis@arm.com>
Signed-off-by: Mike Kelly <mike.kelly@arm.com>
Signed-off-by: Teresa Charlin <teresa.charlinreyes@arm.com>
Change-Id: Ib536ac3cbafc7d9b35c139ad9a65b7735262cd9d
diff --git a/src/backends/cl/workloads/ClSubtractionWorkload.hpp b/src/backends/cl/workloads/ClSubtractionWorkload.hpp
index da6d17c..9f51de6 100644
--- a/src/backends/cl/workloads/ClSubtractionWorkload.hpp
+++ b/src/backends/cl/workloads/ClSubtractionWorkload.hpp
@@ -25,5 +25,6 @@
 
 arm_compute::Status ClSubtractionValidate(const TensorInfo& input0,
                                           const TensorInfo& input1,
-                                          const TensorInfo& output);
+                                          const TensorInfo& output,
+                                          const ActivationDescriptor* activationDescriptor = nullptr);
 } //namespace armnn