Convert more Android.mk files to Android.bp

These modules have their dependencies satisfied, and aren't doing
anything strange.

Change-Id: I72039a15256cbd5e5eee0d79a15d66d74a6c087d
diff --git a/adf/libadf/Android.bp b/adf/libadf/Android.bp
new file mode 100644
index 0000000..2b5461e
--- /dev/null
+++ b/adf/libadf/Android.bp
@@ -0,0 +1,21 @@
+// Copyright (C) 2013 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: "libadf",
+    srcs: ["adf.c"],
+    cflags: ["-Werror"],
+    local_include_dirs: ["include"],
+    export_include_dirs: ["include"],
+}