COMPMID-1564: Add NEDepthwiseConvolution3x3 for QASYMM8

Change-Id: I1f55508af6f220e5f41df7b56daffb4761ed0591
Reviewed-on: https://eu-gerrit-1.euhpc.arm.com/148253
Tested-by: bsgcomp <bsgcomp@arm.com>
Reviewed-by: Isabella Gottardi <isabella.gottardi@arm.com>
diff --git a/tests/validation/NEON/DepthwiseConvolutionLayer.cpp b/tests/validation/NEON/DepthwiseConvolutionLayer.cpp
index 54bce02..8f87a7d 100644
--- a/tests/validation/NEON/DepthwiseConvolutionLayer.cpp
+++ b/tests/validation/NEON/DepthwiseConvolutionLayer.cpp
@@ -304,6 +304,16 @@
 {
     validate(Accessor(_target), _reference, tolerance_qasymm8);
 }
+FIXTURE_DATA_TEST_CASE(RunOptimized, NEDepthwiseConvolutionLayerQuantizedFixture3x3<uint8_t>, framework::DatasetMode::ALL,
+                       combine(combine(combine(combine(datasets::OptimizedDepthwiseConvolutionLayerDataset3x3(),
+                                                       framework::dataset::make("DepthMultiplier", 1)),
+                                               framework::dataset::make("DataType",
+                                                                        DataType::QASYMM8)),
+                                       framework::dataset::make("QuantizationInfo", { QuantizationInfo(0.5f, 10) })),
+                               framework::dataset::make("DataLayout", { DataLayout::NCHW, DataLayout::NHWC })))
+{
+    validate(Accessor(_target), _reference, tolerance_qasymm8);
+}
 FIXTURE_DATA_TEST_CASE(RunLarge, NEDepthwiseConvolutionLayerQuantizedFixture3x3<uint8_t>, framework::DatasetMode::NIGHTLY,
                        combine(combine(combine(combine(datasets::LargeDepthwiseConvolutionLayerDataset3x3(),
                                                        depth_multipliers),