Today, almost all devices with Google Play support live wallpapers. Are you sure the Nokia X doesn't support them, or is it just their launcher that doesn't support them? i.e., can you download a third party launcher like Nova to get it working?
I don't think you need to mention in your store description that it doesn't work on Kindle, because Kindles do not have the Google Play store on them.
In fact, if you have your manifest set up correctly, you don't need to mention any devices that don't support live wallpapers, because your app will be hidden from them anyway.