Set up the framework to choose the default LWS

Resolve COMPMID-4486

Signed-off-by: Giorgio Arena <giorgio.arena@arm.com>
Change-Id: Ib38b7943bd776a6d75d1da163908724c49eae73d
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/5864
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-by: Gian Marco Iodice <gianmarco.iodice@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/core/gpu/cl/kernels/ClDirectConv2dKernel.cpp b/src/core/gpu/cl/kernels/ClDirectConv2dKernel.cpp
index 94c4044..7b98671 100644
--- a/src/core/gpu/cl/kernels/ClDirectConv2dKernel.cpp
+++ b/src/core/gpu/cl/kernels/ClDirectConv2dKernel.cpp
@@ -377,6 +377,11 @@
     return _border_size;
 }
 
+ClDirectConv2dKernel::ClDirectConv2dKernel()
+{
+    _type = CLKernelType::DIRECT;
+}
+
 void ClDirectConv2dKernel::configure(const CLCompileContext &compile_context, ITensorInfo *src, ITensorInfo *weights, ITensorInfo *biases, ITensorInfo *dst,
                                      const PadStrideInfo &conv_info, const ActivationLayerInfo &act_info)
 {