libbootloader_message: convert to Android.bp

Test: build
Change-Id: Ia0c2e141673e37eea29306817d2f4b2c944213b0

bootloader_message/Android.bp

@@ -0,0 +1,26 @@
+//
+// Copyright (C) 2017 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.
+//
+
+cc_library_static {
+    name: "libbootloader_message",
+    srcs: ["bootloader_message.cpp"],
+    cppflags: ["-Werror"],
+    static_libs: [
+        "libbase",
+        "libfs_mgr",
+    ],
+    export_include_dirs: ["include"],
+}