IVGCVSW-1806 More Android NN Driver refactoring

 * Changed #if defined to #ifdef
 * Simplified the Android ML namespace resolution
 * Fixed the relative path in some include directives

Change-Id: I46e46faff98559c8042c1a4b8b82007f462df57d
diff --git a/test/Merger.cpp b/test/Merger.cpp
index a296d8d..118e0d6 100644
--- a/test/Merger.cpp
+++ b/test/Merger.cpp
@@ -30,7 +30,7 @@
                 ErrorStatus expectedExecStatus=ErrorStatus::NONE)
 {
     std::unique_ptr<ArmnnDriver> driver = std::make_unique<ArmnnDriver>(DriverOptions(computeDevice));
-    neuralnetworks::V1_0::Model model{};
+    V1_0::Model model{};
 
     hidl_vec<uint32_t> modelInputIds;
     modelInputIds.resize(inputs.size()+1);
@@ -45,7 +45,7 @@
 
     // make the concat operation
     model.operations.resize(1);
-    model.operations[0].type = neuralnetworks::V1_0::OperationType::CONCATENATION;
+    model.operations[0].type = V1_0::OperationType::CONCATENATION;
     model.operations[0].inputs  = modelInputIds;
     model.operations[0].outputs = hidl_vec<uint32_t>{static_cast<uint32_t>(inputs.size()+1)};