Bluetooth: disable A2DP offloading temporarily

It does not support the A2DP offloading yet.

Bug: 203042971
Test: pass A2DP playback manual test
Change-Id: I998b9fe75c4901a18eec667b6f7e9417297dd53d

bluetooth/qti_default.mk

@@ -47,5 +47,5 @@ PRODUCT_PROPERTY_OVERRIDES += \
 
 PRODUCT_PROPERTY_OVERRIDES += \
     ro.bluetooth.a2dp_offload.supported=true \
-    persist.bluetooth.a2dp_offload.disabled=false \
+    persist.bluetooth.a2dp_offload.disabled=true \
     persist.bluetooth.a2dp_offload.cap=sbc-aac-aptx-aptxhd-ldac