audio: update properties to fix namespace violations

Update properties to add vendor.audio prefix where missing
and remove unused ones to fix namespace violations.

Change-Id: I3723ae3e366178e87eff81001a0f1fd133cc4404
diff --git a/configs/atoll/atoll.mk b/configs/atoll/atoll.mk
index ea2501f..c9c7dd5 100755
--- a/configs/atoll/atoll.mk
+++ b/configs/atoll/atoll.mk
@@ -243,7 +243,7 @@
 
 #enable headset calibration
 PRODUCT_PROPERTY_OVERRIDES += \
-audio.volume.headset.gain.depcal=true
+vendor.audio.volume.headset.gain.depcal=true
 
 #enable dualmic fluence for voice communication
 PRODUCT_PROPERTY_OVERRIDES += \