Refactor generated NNAPI tests

See change I2c0366fb87c96851fa6e0f8fe9ceac012d8e3513

Bug: 136097638
Test: m VtsHalNeuralnetworksV1_0TargetTest
Test: m VtsHalNeuralnetworksV1_1TargetTest
Test: m VtsHalNeuralnetworksV1_2TargetTest
Test: m VtsHalNeuralnetworksV1_2CompatV1_0TargetTest
Change-Id: I6fdede028422145d313d46532b5d2154ef0d40bc
diff --git a/neuralnetworks/1.2/vts/functional/GeneratedTestHarness.h b/neuralnetworks/1.2/vts/functional/GeneratedTestHarness.h
index 30e5578..0ecbe7e 100644
--- a/neuralnetworks/1.2/vts/functional/GeneratedTestHarness.h
+++ b/neuralnetworks/1.2/vts/functional/GeneratedTestHarness.h
@@ -27,6 +27,7 @@
 namespace android {
 namespace hardware {
 namespace neuralnetworks {
+namespace V1_2 {
 namespace generated_tests {
 
 using ::test_helper::MixedTypedExample;
@@ -44,6 +45,7 @@
              bool testDynamicOutputShape = false);
 
 }  // namespace generated_tests
+}  // namespace V1_2
 }  // namespace neuralnetworks
 }  // namespace hardware
 }  // namespace android