Save changed name from CachedBluetoothDevice to native storage

The change preserves the friendly name change over power cycle.
bug 5081605

Change-Id: I2b2cce5a789c72d52439511c42df369639eb0b4b

src/com/android/settings/bluetooth/CachedBluetoothDeviceManager.java

@@ -104,7 +104,7 @@ final class CachedBluetoothDeviceManager {
             return cachedDevice.getName();
         }
 
-        String name = device.getName();
+        String name = device.getAliasName();
         if (name != null) {
             return name;
         }