Adds TENSOR_QUANT8_SYMM support to test infrastructure

This is needed to be able to test DEQUANTIZE after adding
TENSOR_QUANT8_SYMM support.

Test: NeuralNetworksTest_static
Test: VtsHalNeuralnetworksV1_2TargetTest
Change-Id: Iba9b286df70919d7b67cd77c91e625a044bd686c
diff --git a/neuralnetworks/1.0/vts/functional/GeneratedTestHarness.cpp b/neuralnetworks/1.0/vts/functional/GeneratedTestHarness.cpp
index 0724c09..7eea7fc 100644
--- a/neuralnetworks/1.0/vts/functional/GeneratedTestHarness.cpp
+++ b/neuralnetworks/1.0/vts/functional/GeneratedTestHarness.cpp
@@ -72,7 +72,8 @@
     copy_back_(&dst->bool8Operands, ra, src);
     copy_back_(&dst->quant8ChannelOperands, ra, src);
     copy_back_(&dst->quant16AsymmOperands, ra, src);
-    static_assert(8 == MixedTyped::kNumTypes,
+    copy_back_(&dst->quant8SymmOperands, ra, src);
+    static_assert(9 == MixedTyped::kNumTypes,
                   "Number of types in MixedTyped changed, but copy_back function wasn't updated");
 }