COMPMID-3180: Remove padding from NEThreshold

- Removes padding from NEThresholdKernel
- Alters configuration interface to use a descriptor

Change-Id: I394d5e1375454813856d9d206e61dc9a87c2cadc
Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/3300
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/tests/validation/CL/Threshold.cpp b/tests/validation/CL/Threshold.cpp
index 9c68ffe..ec4baf4 100644
--- a/tests/validation/CL/Threshold.cpp
+++ b/tests/validation/CL/Threshold.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 ARM Limited.
+ * Copyright (c) 2017-2020 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -52,7 +52,7 @@
 
     // Create and configure function
     CLThreshold thrsh;
-    thrsh.configure(&src, &dst, threshold, false_value, true_value, type, upper);
+    thrsh.configure(&src, &dst, ThresholdKernelInfo(threshold, false_value, true_value, type, upper));
 
     // Validate valid region
     const ValidRegion valid_region = shape_to_valid_region(shape);