Add FP32 Neon™ swish activation

Change-Id: Id37b59adbc8c4cbe218d1652aeb02a0b4ce42c66
Signed-off-by: Jonathan Deakin <jonathan.deakin@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/8256
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Pablo Marquez Tello <pablo.tello@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Benchmark: Arm Jenkins <bsgcomp@arm.com>
diff --git a/utils/TypePrinter.h b/utils/TypePrinter.h
index 21f9c08..f55f72a 100644
--- a/utils/TypePrinter.h
+++ b/utils/TypePrinter.h
@@ -628,6 +628,9 @@
         case ActivationLayerInfo::ActivationFunction::HARD_SWISH:
             os << "HARD_SWISH";
             break;
+        case ActivationLayerInfo::ActivationFunction::SWISH:
+            os << "SWISH";
+            break;
         case ActivationLayerInfo::ActivationFunction::GELU:
             os << "GELU";
             break;