Use enums in webostv (#62000)

homeassistant/components/webostv/media_player.py

@@ -9,7 +9,10 @@ from aiopylgtv import PyLGTVCmdException, PyLGTVPairException, WebOsClient
 from websockets.exceptions import ConnectionClosed
 
 from homeassistant import util
-from homeassistant.components.media_player import DEVICE_CLASS_TV, MediaPlayerEntity
+from homeassistant.components.media_player import (
+    MediaPlayerDeviceClass,
+    MediaPlayerEntity,
+)
 from homeassistant.components.media_player.const import (
     MEDIA_TYPE_CHANNEL,
     SUPPORT_NEXT_TRACK,
@@ -239,7 +242,7 @@ class LgWebOSMediaPlayerEntity(MediaPlayerEntity):
     @property
     def device_class(self):
         """Return the device class of the device."""
-        return DEVICE_CLASS_TV
+        return MediaPlayerDeviceClass.TV
 
     @property
     def state(self):