COMPMID-996: Add support for grouped convolution.

Change-Id: I279e29ce20b3dde57445264dc11491f127b44d70
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/124429
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Jenkins <bsgcomp@arm.com>
diff --git a/arm_compute/graph2/backends/CL/CLDeviceBackend.h b/arm_compute/graph2/backends/CL/CLDeviceBackend.h
index 77a8faf..3a70f0b 100644
--- a/arm_compute/graph2/backends/CL/CLDeviceBackend.h
+++ b/arm_compute/graph2/backends/CL/CLDeviceBackend.h
@@ -55,7 +55,7 @@
     void initialize_backend() override;
     void setup_backend_context(GraphContext &ctx) override;
     std::unique_ptr<ITensorHandle> create_tensor(const Tensor &tensor) override;
-    std::unique_ptr<ITensorHandle> create_subtensor(ITensorHandle *parent, TensorShape shape, Coordinates coords) override;
+    std::unique_ptr<ITensorHandle> create_subtensor(ITensorHandle *parent, TensorShape shape, Coordinates coords, bool extend_parent) override;
     std::unique_ptr<arm_compute::IFunction> configure_node(INode &node, GraphContext &ctx) override;
     Status validate_node(INode &node) override;
     std::shared_ptr<arm_compute::IMemoryManager> create_memory_manager(MemoryManagerAffinity affinity) override;
diff --git a/arm_compute/graph2/backends/CL/CLSubTensorHandle.h b/arm_compute/graph2/backends/CL/CLSubTensorHandle.h
index 5584a8b..9910980 100644
--- a/arm_compute/graph2/backends/CL/CLSubTensorHandle.h
+++ b/arm_compute/graph2/backends/CL/CLSubTensorHandle.h
@@ -43,8 +43,9 @@
      * @param[in] parent_handle Parent tensor handle
      * @param[in] shape         Sub-Tensor shape
      * @param[in] coords        Starting coordinates
+     * @param[in] extend_parent Extends parent shape if true
      */
-    CLSubTensorHandle(ITensorHandle *parent_handle, const TensorShape &shape, const Coordinates &coords);
+    CLSubTensorHandle(ITensorHandle *parent_handle, const TensorShape &shape, const Coordinates &coords, bool extend_parent = false);
     /** Destructor: free the tensor's memory */
     ~CLSubTensorHandle() = default;
     /** Allow instances of this class to be move constructed */