Compute Hard-Swish with a Lookup table for qasymm8.

* Resolves COMPMID-5211

Change-Id: I5914f971d733174dae67e6b4c589f45c75733cf7
Signed-off-by: Pablo Marquez Tello <pablo.tello@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/7654
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michalis Spyrou <michalis.spyrou@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/src/cpu/kernels/activation/list.h b/src/cpu/kernels/activation/list.h
index bf9aa0f..7220d6c 100644
--- a/src/cpu/kernels/activation/list.h
+++ b/src/cpu/kernels/activation/list.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020-2021 Arm Limited.
+ * Copyright (c) 2020-2022 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -32,6 +32,7 @@
     void func_name(const ITensor *src, ITensor *dst, const ActivationLayerInfo &act_info, const Window &window)
 
 DECLARE_ACTIVATION_KERNEL(neon_qasymm8_activation);
+DECLARE_ACTIVATION_KERNEL(neon_qasymm8_hardswish_lut);
 DECLARE_ACTIVATION_KERNEL(sve2_qasymm8_activation);
 DECLARE_ACTIVATION_KERNEL(neon_qasymm8_signed_activation);
 DECLARE_ACTIVATION_KERNEL(sve2_qasymm8_signed_activation);