add libadf

Helper library to enumerate ADF objects, wrap ADF ioctls, and read event
data

Change-Id: I7aa7f88935174e650a40b2f9db3212280121f760
Signed-off-by: Greg Hackmann <ghackmann@google.com>
diff --git a/adf/libadf/Android.mk b/adf/libadf/Android.mk
new file mode 100644
index 0000000..908aa6c
--- /dev/null
+++ b/adf/libadf/Android.mk
@@ -0,0 +1,23 @@
+# 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.
+
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := adf.c
+LOCAL_MODULE := libadf
+LOCAL_MODULE_TAGS := optional
+LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include
+LOCAL_C_INCLUDES += $(LOCAL_EXPORT_C_INCLUDE_DIRS)
+include $(BUILD_STATIC_LIBRARY)