feat (ledkia_fan_light): add compatible FG-6890 model

Issue #4586

custom_components/tuya_local/devices/ledkia_fan_light.yaml

@@ -3,6 +3,9 @@ products:
   - id: u5ovvhurbvynvspv
     manufacturer: Ledkia
     name: Fan and light controller
+  - id: 6xxhlgqzuqgytuy
+    manufacturer: Tamoor
+    model: FG-6890
 entities:
   - entity: fan
     dps:
@@ -13,7 +16,7 @@ entities:
         type: integer
         name: speed
         optional: true
-        range:
+b        range:
           min: 1
           max: 6
       - id: 63