gralloc: Use default interfaces of allocator/mapper

Use default interfaces until BOARD_VNDK_VERSION is enabled

Change-Id: I3192c912ca790174f6fc6acb37988d6720167b07
diff --git a/gralloc/service.cpp b/gralloc/service.cpp
index 8efe313..1136e2f 100644
--- a/gralloc/service.cpp
+++ b/gralloc/service.cpp
@@ -32,11 +32,11 @@
 
 using android::hardware::configureRpcThreadpool;
 using android::hardware::joinRpcThreadpool;
-using vendor::qti::hardware::display::allocator::V1_0::IQtiAllocator;
 using vendor::qti::hardware::display::allocator::V1_0::implementation::QtiAllocator;
+using android::hardware::graphics::allocator::V2_0::IAllocator;
 
 int main(int, char **) {
-  android::sp<IQtiAllocator> service = new QtiAllocator();
+  android::sp<IAllocator> service = new QtiAllocator();
   configureRpcThreadpool(1, true /*callerWillJoin*/);
   if (service->registerAsService() != android::OK) {
     ALOGE("Cannot register QTI Allocator service");