EM3378: revert temperature unit change

From debug log, the device is clearly outputting Fahrenheit when the
unit dp is true, which is as per the original implementation.

Confusion seems to be caused by HA doing conversion to the user's
configured units.

Issue #419

custom_components/tuya_local/devices/em3378_weather_station.yaml

@@ -18,9 +18,9 @@ primary_entity:
       name: unit
       mapping:
         - dps_val: true
-          value: C
-        - dps_val: false
           value: F
+        - dps_val: false
+          value: C
     - id: 117
       name: fault
       type: bitfield
@@ -61,9 +61,9 @@ secondary_entities:
         type: boolean
         name: unit
         mapping:
-          - dps_val: true
-            value: C
           - dps_val: false
+            value: C
+          - dps_val: true
             value: F
   - entity: sensor
     name: Remote humidity 1
@@ -91,9 +91,9 @@ secondary_entities:
         type: boolean
         name: unit
         mapping:
-          - dps_val: true
-            value: C
           - dps_val: false
+            value: C
+          - dps_val: true
             value: F
   - entity: sensor
     name: Remote humidity 2
@@ -122,9 +122,9 @@ secondary_entities:
         type: boolean
         name: unit
         mapping:
-          - dps_val: true
-            value: C
           - dps_val: false
+            value: C
+          - dps_val: true
             value: F
   - entity: sensor
     name: Remote humidity 3
@@ -171,9 +171,9 @@ secondary_entities:
         type: boolean
         name: option
         mapping:
-          - dps_val: true
-            value: celsius
           - dps_val: false
+            value: celsius
+          - dps_val: true
             value: fahrenheit
   - entity: binary_sensor
     class: problem