Add the atrace utility.

This change adds a new system binary to help with capturing and dumping
kernel traces.

Change-Id: If2fc074480f822588a4c171312dc4c04fd305356
diff --git a/cmds/atrace/Android.mk b/cmds/atrace/Android.mk
new file mode 100644
index 0000000..b6c55d4
--- /dev/null
+++ b/cmds/atrace/Android.mk
@@ -0,0 +1,12 @@
+# Copyright 2012 The Android Open Source Project
+
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES:= atrace.c
+
+LOCAL_MODULE:= atrace
+
+LOCAL_MODULE_TAGS:= optional
+
+include $(BUILD_EXECUTABLE)