COMPMID-2010: Add support for QASYMM8 in NEArithmeticSubtractionKernel

Change-Id: Ica65d5a13f5670d525bbb961a870b23a21d093d9
Signed-off-by: Manuel Bottini <manuel.bottini@arm.com>
Reviewed-on: https://review.mlplatform.org/c/807
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Pablo Marquez <pablo.tello@arm.com>
diff --git a/tests/validation/fixtures/ArithmeticOperationsFixture.h b/tests/validation/fixtures/ArithmeticOperationsFixture.h
index fb46a51..76f241c 100644
--- a/tests/validation/fixtures/ArithmeticOperationsFixture.h
+++ b/tests/validation/fixtures/ArithmeticOperationsFixture.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2018 ARM Limited.
+ * Copyright (c) 2017-2019 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -168,6 +168,20 @@
     }
 };
 
+template <typename TensorType, typename AccessorType, typename FunctionType>
+class ArithmeticSubtractionQuantValidationFixture : public ArithmeticOperationGenericFixture<TensorType, AccessorType, FunctionType, qasymm8_t>
+{
+public:
+    template <typename...>
+    void setup(const TensorShape &shape, DataType data_type0, DataType data_type1, DataType output_data_type, ConvertPolicy convert_policy,
+               QuantizationInfo in1_qua_info, QuantizationInfo in2_qua_info, QuantizationInfo out_qua_info)
+    {
+        ArithmeticOperationGenericFixture<TensorType, AccessorType, FunctionType, qasymm8_t>::setup(reference::ArithmeticOperation::SUB, shape, shape,
+                                                                                                    data_type0, data_type1, output_data_type, convert_policy,
+                                                                                                    in1_qua_info, in2_qua_info, out_qua_info);
+    }
+};
+
 template <typename TensorType, typename AccessorType, typename FunctionType, typename T>
 class ArithmeticSubtractionValidationFixture : public ArithmeticOperationGenericFixture<TensorType, AccessorType, FunctionType, T>
 {