IVGCVSW-3548 Use BuildArmComputePadStrideInfo() in CL and NEON convolution workloads

* Refactoring: use existing utility function for creating arm_compute::PadStrideInfo
  objects in CL and NEON convolution workloads instead of duplicating code

Signed-off-by: Aron Virginas-Tar <Aron.Virginas-Tar@arm.com>
Change-Id: Id5e5a0f264e20af99dabce8dd8c6b782dedb94e6
diff --git a/src/backends/cl/workloads/ClDepthwiseConvolutionWorkload.cpp b/src/backends/cl/workloads/ClDepthwiseConvolutionWorkload.cpp
index e681e95..126950c 100644
--- a/src/backends/cl/workloads/ClDepthwiseConvolutionWorkload.cpp
+++ b/src/backends/cl/workloads/ClDepthwiseConvolutionWorkload.cpp
@@ -91,14 +91,6 @@
         BuildArmComputeTensor(*m_BiasTensor, m_Data.m_Bias->GetTensorInfo(), m_Data.m_Parameters.m_DataLayout);
     }
 
-    const arm_compute::PadStrideInfo padStrideInfo(m_Data.m_Parameters.m_StrideX,
-                                             m_Data.m_Parameters.m_StrideY,
-                                             m_Data.m_Parameters.m_PadLeft,
-                                             m_Data.m_Parameters.m_PadRight,
-                                             m_Data.m_Parameters.m_PadTop,
-                                             m_Data.m_Parameters.m_PadBottom,
-                                             arm_compute::DimensionRoundingType::FLOOR);
-
     const arm_compute::Size2D aclDilationInfo = BuildArmComputeSize2D(
                 m_Data.m_Parameters.m_DilationX,
                 m_Data.m_Parameters.m_DilationY);
@@ -120,6 +112,7 @@
     // Get the depth multiplier
     const unsigned int depthMultiplier = weightInfo.GetShape()[0];
 
+    arm_compute::PadStrideInfo padStrideInfo = BuildArmComputePadStrideInfo(m_Data.m_Parameters);
 
     // Check for optimisation opportunities.
     bool use3x3Optimisation = (weightInfo.GetShape()[2] == 3) && (weightInfo.GetShape()[3] == 3);