Add a native UserHalHelper library.

This library contains helper functions to convert the User HAL reponse
structs to VehiclePropValues and request VehiclePropValues to HAL
structs.

Test: atest android.hardware.automotive.vehicle@2.0-utils-unit-tests
Bug: 150409377
Bug: 167588307

Change-Id: I978b39e2f3ee58eb3b154f507c714ca1ba2d1e3b
Merged-In: I978b39e2f3ee58eb3b154f507c714ca1ba2d1e3b
(cherry picked from commit b33e2abbfe38756239badc03a83eb421ff5da0e7)
diff --git a/automotive/vehicle/2.0/utils/Android.bp b/automotive/vehicle/2.0/utils/Android.bp
new file mode 100644
index 0000000..e354634
--- /dev/null
+++ b/automotive/vehicle/2.0/utils/Android.bp
@@ -0,0 +1,41 @@
+// Copyright (C) 2020 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.
+
+// User HAL helper library.
+cc_library_static {
+    name: "android.hardware.automotive.vehicle@2.0-user-hal-helper-lib",
+    defaults: ["vhal_v2_0_defaults"],
+    vendor: true,
+    host_supported: true,
+    srcs: [
+        "UserHalHelper.cpp",
+    ],
+    export_include_dirs: [
+        ".",
+    ],
+}
+
+cc_test {
+    name: "android.hardware.automotive.vehicle@2.0-utils-unit-tests",
+    defaults: ["vhal_v2_0_defaults"],
+    vendor: true,
+    srcs: [
+        "tests/UserHalHelper_test.cpp",
+    ],
+    static_libs: [
+        "android.hardware.automotive.vehicle@2.0-user-hal-helper-lib",
+        "libgmock",
+    ],
+    test_suites: ["general-tests"],
+}