Enable cpu auto detection and ns optimized code on android

BUG=
TEST=
Review URL: https://webrtc-codereview.appspot.com/547006

git-svn-id: http://webrtc.googlecode.com/svn/trunk@2195 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/src/system_wrappers/source/cpu_features_android.c b/src/system_wrappers/source/cpu_features_android.c
new file mode 100644
index 0000000..7a4fa6e
--- /dev/null
+++ b/src/system_wrappers/source/cpu_features_android.c
@@ -0,0 +1,15 @@
+/*
+ *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "android/cpu-features.h"
+
+uint64_t WebRtc_GetCPUFeaturesARM(void) {
+  return android_getCpuFeatures();
+}