Bluetooth: Enable AAC VBR by default

AAC VBR is more preferred than CBR for A2DP playback.

Bug: 192203000
Test: dumpsys bluetooth_manager
Change-Id: I8f758c102164da9936de7ddc0bb46e0a99279359
diff --git a/device-raven.mk b/device-raven.mk
index 0e9c09d..b4f4e64 100644
--- a/device-raven.mk
+++ b/device-raven.mk
@@ -62,6 +62,10 @@
 PRODUCT_COPY_FILES += \
 	device/google/raviole/thermal_info_config_raven.json:$(TARGET_COPY_OUT_VENDOR)/etc/thermal_info_config.json
 
+# Bluetooth
+PRODUCT_PRODUCT_PROPERTIES += \
+    persist.bluetooth.a2dp_aac.vbr_supported=true
+
 # Bluetooth Tx power caps for raven
 PRODUCT_COPY_FILES += \
     $(LOCAL_PATH)/bluetooth_power_limits_raven.csv:$(TARGET_COPY_OUT_VENDOR)/etc/bluetooth_power_limits.csv