Fix authorization check for Audio Source.

Bluez sends the UUID of the local service being accessed in Agent.Authorize,
not the remote service. So check for Audio Source not Audio Sink.

In most cases this was not a problem because Bluez sends us AdvAudioDist UUID
(0x110D) for incoming A2DP connections, which we already check for. This is a
precautionary change.
diff --git a/core/java/android/server/BluetoothEventLoop.java b/core/java/android/server/BluetoothEventLoop.java
index 34d6d03..975c2ff 100644
--- a/core/java/android/server/BluetoothEventLoop.java
+++ b/core/java/android/server/BluetoothEventLoop.java
@@ -430,8 +430,10 @@
 
         boolean authorized = false;
         UUID uuid = UUID.fromString(deviceUuid);
+        // Bluez sends the UUID of the local service being accessed, _not_ the
+        // remote service
         if (mBluetoothService.isEnabled() &&
-                (BluetoothUuid.isAudioSink(uuid) || BluetoothUuid.isAvrcpTarget(uuid)
+                (BluetoothUuid.isAudioSource(uuid) || BluetoothUuid.isAvrcpTarget(uuid)
                         || BluetoothUuid.isAdvAudioDist(uuid))) {
             BluetoothA2dp a2dp = new BluetoothA2dp(mContext);
             BluetoothDevice device = mAdapter.getRemoteDevice(address);
@@ -444,6 +446,7 @@
         } else {
             Log.i(TAG, "Rejecting incoming " + deviceUuid + " connection from " + address);
         }
+        log("onAgentAuthorize(" + objectPath + ", " + deviceUuid + ") = " + authorized);
         return authorized;
     }