gta4xl-common: libaudioproxy: Override USB Playback duration

Change-Id: I0b337f1164a7461e8a4555f66bd2cf5f26a29956
diff --git a/audio/proxy/audio_pcm.h b/audio/proxy/audio_pcm.h
index 523755c..f724eb2 100644
--- a/audio/proxy/audio_pcm.h
+++ b/audio/proxy/audio_pcm.h
@@ -867,4 +867,7 @@
 // Duration for Remote-Mic Playback/Capture loopback node configuration
 #define PREDEFINED_REMOTE_MIC_DURATION      20  // 20ms
 
+// Duration for USB Playback
+#define PREDEFINED_USB_PLAYBACK_DURATION    10  // 10ms
+
 #endif  // __EXYNOS_AUDIOPROXY_PCM_H__