IVGCVSW-3293 Add CL backend support for PReLU

Change-Id: I1bb187db89bb3eb883b8f0aca4c3439d82b56583
Signed-off-by: Nikhil Raj <nikhil.raj@arm.com>
diff --git a/src/backends/cl/ClWorkloadFactory.hpp b/src/backends/cl/ClWorkloadFactory.hpp
index 32925f7..5448504 100644
--- a/src/backends/cl/ClWorkloadFactory.hpp
+++ b/src/backends/cl/ClWorkloadFactory.hpp
@@ -64,6 +64,9 @@
     std::unique_ptr<IWorkload> CreatePooling2d(const Pooling2dQueueDescriptor& descriptor,
                                                const WorkloadInfo& info) const override;
 
+    std::unique_ptr<IWorkload> CreatePrelu(const PreluQueueDescriptor& descriptor,
+                                           const WorkloadInfo& info) const override;
+
     std::unique_ptr<IWorkload> CreateConvolution2d(const Convolution2dQueueDescriptor& descriptor,
                                                    const WorkloadInfo& info) const override;