sepolicy: Read access to audioserver for Bluetooth properties

Provide read/write access to audioserver for Bluetooth
properties used with A2DP offload.

Bug: 63932139
Bug: 68824150
Test: Manual; TestTracker/148125
Change-Id: I40c932d085ac55bc45e6654f966b2c9d244263d0
(cherry picked from commit 041049bc)

private/audioserver.te

@@ -36,8 +36,8 @@ allow audioserver permission_service:service_manager find;
 allow audioserver power_service:service_manager find;
 allow audioserver scheduling_policy_service:service_manager find;
 
-# Grant access to the "persist.bluetooth.enabledelayreports" property
-get_prop(audioserver, bluetooth_prop);
+# Allow read/write access to bluetooth-specific properties
+set_prop(audioserver, bluetooth_prop)
 
 # Grant access to audio files to audioserver
 allow audioserver audio_data_file:dir ra_dir_perms;