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/arm_compute/runtime/NEON/functions/NEActivationLayer.h b/arm_compute/runtime/NEON/functions/NEActivationLayer.h
index cfece5c..3f410fc 100644
--- a/arm_compute/runtime/NEON/functions/NEActivationLayer.h
+++ b/arm_compute/runtime/NEON/functions/NEActivationLayer.h
@@ -46,8 +46,6 @@
      * @param[in] ctx Runtime context to be used by the function
      */
     NEActivationLayer(IRuntimeContext *ctx = nullptr);
-    /** Destructor */
-    ~NEActivationLayer();
     /** Prevent instances of this class from being copied (As this class contains pointers) */
     NEActivationLayer(const NEActivationLayer &) = delete;
     /** Default move constructor */
@@ -56,6 +54,8 @@
     NEActivationLayer &operator=(const NEActivationLayer &) = delete;
     /** Default move assignment operator */
     NEActivationLayer &operator=(NEActivationLayer &&);
+    /** Destructor */
+    ~NEActivationLayer();
     /** [NEActivationLayer snippet] **/
     /** Set the input and output tensor.
      *
@@ -93,6 +93,19 @@
 class NEActivationLayer : public INEOperator
 {
 public:
+    /** Constructor */
+    NEActivationLayer() = default;
+    /** Prevent instances of this class from being copied */
+    NEActivationLayer(const NEActivationLayer &) = delete;
+    /** Default move constructor */
+    NEActivationLayer(NEActivationLayer &&) = default;
+    /** Prevent instances of this class from being copied */
+    NEActivationLayer &operator=(const NEActivationLayer &) = delete;
+    /** Default move assignment operator */
+    NEActivationLayer &operator=(NEActivationLayer &&) = default;
+    /** Destructor */
+    ~NEActivationLayer();
+
     /** Set the input and output tensor.
      *
      * @param[in]  input           Source tensor info. Data types supported: QASYMM8/QASYMM8_SIGNED/QSYMM16/F16/F32.