COMPMID-1764 NEON: Implement ArgMax/ArgMin

Change-Id: Ibe23aa90b36ffd8553d1d1c35fada5d300fab829
Reviewed-on: https://review.mlplatform.org/475
Reviewed-by: Isabella Gottardi <isabella.gottardi@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Giuseppe Rossini <giuseppe.rossini@arm.com>
diff --git a/tests/validation/reference/L2NormalizeLayer.cpp b/tests/validation/reference/L2NormalizeLayer.cpp
index fcd6226..43885b2 100644
--- a/tests/validation/reference/L2NormalizeLayer.cpp
+++ b/tests/validation/reference/L2NormalizeLayer.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018 ARM Limited.
+ * Copyright (c) 2017-2019 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -54,7 +54,7 @@
     SimpleTensor<T> dst{ src.shape(), src.data_type() };
 
     // Reduce across given axis
-    SimpleTensor<T> sum = reduction_operation(src, get_output_shape(src.shape(), axis), axis, ReductionOperation::SUM_SQUARE);
+    SimpleTensor<T> sum = reduction_operation<T, T>(src, get_output_shape(src.shape(), axis), axis, ReductionOperation::SUM_SQUARE);
 
     // Compute reference
     const int upper_dims     = src.shape().total_size_upper(axis + 1);