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/ClScaleKernel.cpp b/src/core/gpu/cl/kernels/ClScaleKernel.cpp
index 7fb5d2a..57ca331 100644
--- a/src/core/gpu/cl/kernels/ClScaleKernel.cpp
+++ b/src/core/gpu/cl/kernels/ClScaleKernel.cpp
@@ -140,6 +140,11 @@
     return Status{};
 }
 
+ClScaleKernel::ClScaleKernel()
+{
+    _type = CLKernelType::ELEMENTWISE;
+}
+
 void ClScaleKernel::configure(const CLCompileContext &compile_context, ITensorInfo *src, ITensorInfo *dst, const ScaleKernelInfo &info)
 {
     ARM_COMPUTE_ERROR_THROW_ON(validate_arguments(src, dst, info));