Ensure we import in the views module

Author: duzumaki

oauth2_provider/views/__init__.py

@@ -17,3 +17,4 @@
 from .introspect import IntrospectTokenView
 from .oidc import ConnectDiscoveryInfoView, JwksInfoView, RPInitiatedLogoutView, UserInfoView
 from .token import AuthorizedTokenDeleteView, AuthorizedTokensListView
+from .device import DeviceAuthorizationView