Merge "example-light HAL uses "default" service name"

using android::hardware::light::V2_0::ILight;

int main() {

    const char instance[] = "light";

    android::sp<ILight> service = new Light();

    configureRpcThreadpool(1, true /*callerWillJoin*/);

    service->registerAsService(instance);

    service->registerAsService();

    joinRpcThreadpool();

}