COMPMID-1507 Add support for QASYMM8 in CLScaleKernel

Change-Id: I4a32e47e6d9152633668cf0e14db88fc8c26f7ea
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/148167
Tested-by: bsgcomp <bsgcomp@arm.com>
Reviewed-by: Michele DiGiorgio <michele.digiorgio@arm.com>
diff --git a/tests/validation/reference/Scale.h b/tests/validation/reference/Scale.h
index 566e30a..66267eb 100644
--- a/tests/validation/reference/Scale.h
+++ b/tests/validation/reference/Scale.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 ARM Limited.
+ * Copyright (c) 2017-2018 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -25,6 +25,7 @@
 #define __ARM_COMPUTE_TEST_SCALE_H__
 
 #include "tests/SimpleTensor.h"
+#include "tests/validation/Helpers.h"
 
 namespace arm_compute
 {
@@ -35,7 +36,7 @@
 namespace reference
 {
 template <typename T>
-SimpleTensor<T> scale(const SimpleTensor<T> &in, float scale_x, float scale_y, InterpolationPolicy policy, BorderMode border_mode, T constant_border_value = 0,
+SimpleTensor<T> scale(const SimpleTensor<T> &src, float scale_x, float scale_y, InterpolationPolicy policy, BorderMode border_mode, T constant_border_value = 0,
                       SamplingPolicy sampling_policy = SamplingPolicy::CENTER, bool ceil_policy_scale = false);
 } // namespace reference
 } // namespace validation