COMPMID-3638: Move NEON kernels

Signed-off-by: Michalis Spyrou <michalis.spyrou@arm.com>
Change-Id: Ieed3e4bc8be7fef80c90c5094599b477a56fc473
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4285
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Georgios Pinitas <georgios.pinitas@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/runtime/NEON/functions/NELaplacianPyramid.cpp b/src/runtime/NEON/functions/NELaplacianPyramid.cpp
index 4f0639b..a2651db 100644
--- a/src/runtime/NEON/functions/NELaplacianPyramid.cpp
+++ b/src/runtime/NEON/functions/NELaplacianPyramid.cpp
@@ -29,11 +29,15 @@
 #include "arm_compute/core/Validate.h"
 #include "arm_compute/runtime/NEON/functions/NEArithmeticSubtraction.h"
 #include "arm_compute/runtime/NEON/functions/NEDepthConvertLayer.h"
-#include "arm_compute/runtime/NEON/functions/NEGaussian5x5.h"
 #include "arm_compute/runtime/NEON/functions/NEGaussianPyramid.h"
 #include "arm_compute/runtime/Tensor.h"
+#include "src/core/NEON/kernels/NEFillBorderKernel.h"
+#include "src/core/NEON/kernels/NEGaussian5x5Kernel.h"
+#include "src/core/NEON/kernels/NEGaussianPyramidKernel.h"
 
-using namespace arm_compute;
+namespace arm_compute
+{
+NELaplacianPyramid::~NELaplacianPyramid() = default;
 
 NELaplacianPyramid::NELaplacianPyramid() // NOLINT
     : _num_levels(0),
@@ -105,3 +109,4 @@
     _gauss_pyr.allocate();
     _conv_pyr.allocate();
 }
+} // namespace arm_compute