Bluetooth: log who changes adapter name

This is very helpful to find which third party app modified the adapter
name.

Bug: 168605944
Test: manual - change name, observe logcat output
Change-Id: I9a13c89e6ef416286411f786e233d81507c9d53a

services/core/java/com/android/server/BluetoothManagerService.java

@@ -412,7 +412,8 @@ class BluetoothManagerService extends IBluetoothManager.Stub {
             if (BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED.equals(action)) {
                 String newName = intent.getStringExtra(BluetoothAdapter.EXTRA_LOCAL_NAME);
                 if (DBG) {
-                    Slog.d(TAG, "Bluetooth Adapter name changed to " + newName);
+                    Slog.d(TAG, "Bluetooth Adapter name changed to " + newName + " by "
+                            + mContext.getPackageName());
                 }
                 if (newName != null) {
                     storeNameAndAddress(newName, null);