Add boilerplate default implementation for Gnss Hal v1.1

Bug: 73845705

Test: gce_x86 device builds and runs. Debug logging shows default
implementation is called by GnssLocationProvider.

Change-Id: I58db6b11ad8b67d0364d8945801165cf6e499e55
diff --git a/gnss/1.1/default/service.cpp b/gnss/1.1/default/service.cpp
new file mode 100644
index 0000000..b3ef710
--- /dev/null
+++ b/gnss/1.1/default/service.cpp
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#define LOG_TAG "android.hardware.gnss@1.1-service"
+
+#include <hidl/HidlSupport.h>
+#include <hidl/HidlTransportSupport.h>
+#include "Gnss.h"
+
+using ::android::hardware::configureRpcThreadpool;
+using ::android::hardware::gnss::V1_1::implementation::Gnss;
+using ::android::hardware::gnss::V1_1::IGnss;
+using ::android::hardware::joinRpcThreadpool;
+using ::android::OK;
+using ::android::sp;
+
+int main(int /* argc */, char* /* argv */ []) {
+    sp<IGnss> gnss = new Gnss();
+    configureRpcThreadpool(1, true /* will join */);
+    if (gnss->registerAsService() != OK) {
+        ALOGE("Could not register gnss 1.1 service.");
+        return 1;
+    }
+    joinRpcThreadpool();
+
+    ALOGE("Service exited!");
+    return 1;
+}