wingray/audio: build the audio HAL, using legacy wrappers

Change-Id: I77e5b6d6c54b73f6bf91c6d783232101adb2959c
Signed-off-by: Dima Zavin <dima@android.com>
diff --git a/libaudio/AudioHardware.h b/libaudio/AudioHardware.h
index 9a9ddb0..76ea2f7 100644
--- a/libaudio/AudioHardware.h
+++ b/libaudio/AudioHardware.h
@@ -32,7 +32,9 @@
 }
 #endif
 
-namespace android {
+namespace android_audio_legacy {
+    using android::Mutex;
+    using android::SortedVector;
 
 #include <linux/cpcap_audio.h>
 #include <linux/tegra_audio.h>