Fix incomplete Power HAL VTS tests

Add missing Android.mk files and the option to test either binderized
or pass-through implementation.

Bug: 32022775
Test: Built and ran tests.
Change-Id: Ie28a53c92b3512c946416e43e8410ca5bef1274f
Signed-off-by: Connor O'Brien <connoro@google.com>
diff --git a/power/1.0/vts/functional/Android.mk b/power/1.0/vts/functional/Android.mk
new file mode 100644
index 0000000..f9e3276
--- /dev/null
+++ b/power/1.0/vts/functional/Android.mk
@@ -0,0 +1,19 @@
+#
+# 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.
+#
+
+LOCAL_PATH := $(call my-dir)
+
+include $(call all-subdir-makefiles)