Petoneer Fresco EzGo: add raw fault code to problem sensor

PR #2880

custom_components/tuya_local/devices/petoneer_fresco_ezgo_petfountain.yaml

@@ -98,6 +98,9 @@ entities:
           - dps_val: 0
             value: false
           - value: true
+      - id: 23
+        type: bitfield
+        name: fault_code
       - id: 23
         type: bitfield
         name: description