configs: msmnile: enable usb burst mode feature flag

Introduce and enable feature flag for usb burst mode

Change-Id: I3a4e6ad797e73db4f9b7082b8b9b362885f407ad
diff --git a/configs/msmnile/msmnile.mk b/configs/msmnile/msmnile.mk
index b837e05..e515548 100644
--- a/configs/msmnile/msmnile.mk
+++ b/configs/msmnile/msmnile.mk
@@ -65,6 +65,7 @@
 AUDIO_FEATURE_ENABLED_RAS := true
 AUDIO_FEATURE_ENABLED_SND_MONITOR := true
 AUDIO_FEATURE_ENABLED_DLKM := true
+AUDIO_FEATURE_ENABLED_USB_BURST_MODE := true
 ##AUDIO_FEATURE_FLAGS
 
 #Audio Specific device overlays