Bluetooth A2DP offload: Binder call to audio HAL

Add rule to allow Binder call from Bluetooth process to Bluetooth
audio HIDL interface running in audio HAL service process.

Bug: 72242910
Test: Manual; TestTracker/148125
Change-Id: I1981a78bece10b8e516f218d3edde8b77943d130
(cherry picked from commit e8cfac90e8bf14466b6431a21bc5ccd4bf6ca3ea)
diff --git a/private/hwservice_contexts b/private/hwservice_contexts
index d7ffb8f..abc989e 100644
--- a/private/hwservice_contexts
+++ b/private/hwservice_contexts
@@ -6,6 +6,7 @@
 android.hardware.authsecret::IAuthSecret                        u:object_r:hal_authsecret_hwservice:s0
 android.hardware.biometrics.fingerprint::IBiometricsFingerprint u:object_r:hal_fingerprint_hwservice:s0
 android.hardware.bluetooth::IBluetoothHci                       u:object_r:hal_bluetooth_hwservice:s0
+android.hardware.bluetooth.a2dp::IBluetoothAudioOffload         u:object_r:hal_audio_hwservice:s0
 android.hardware.boot::IBootControl                             u:object_r:hal_bootctl_hwservice:s0
 android.hardware.broadcastradio::IBroadcastRadio                u:object_r:hal_broadcastradio_hwservice:s0
 android.hardware.broadcastradio::IBroadcastRadioFactory         u:object_r:hal_broadcastradio_hwservice:s0