Implement Operator API

Resolves: COMPMID-4512

Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Change-Id: Id12130365fa3fe2261160931dcc7affb6b467186
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/6031
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/cpu/CpuContext.h b/src/cpu/CpuContext.h
index 9a59af3..da241ed 100644
--- a/src/cpu/CpuContext.h
+++ b/src/cpu/CpuContext.h
@@ -62,6 +62,10 @@
     // Inherrited methods overridden
     ITensorV2 *create_tensor(const AclTensorDescriptor &desc, bool allocate) override;
     IQueue *create_queue(const AclQueueOptions *options) override;
+    std::tuple<IOperator *, StatusCode> create_activation(const AclTensorDescriptor &src,
+                                                          const AclTensorDescriptor     &dst,
+                                                          const AclActivationDescriptor &act,
+                                                          bool                           is_validate) override;
 
 private:
     AllocatorWrapper _allocator;