Fixed wrong 48V scaling for UNB

pypcc/config/UNB2TR.yaml

@@ -315,10 +315,19 @@ variables:
      dtype: uint32
      dim: 2
 
+   - name: UNB2_DC_DC_48V_12V_VIN
+     driver: switch_PS
+     devreg:  DC_DC.VIN
+     width: 16
+     rw:  ro
+     dtype: double
+     scale: smbus_2bytes_to_float
+     dim: 2
+     monitor: true
 
-   - name: [UNB2_DC_DC_48V_12V_VIN,UNB2_DC_DC_48V_12V_VOUT]
+   - name: UNB2_DC_DC_48V_12V_VOUT
      driver: switch_PS
-     devreg:  [DC_DC.VIN,DC_DC.VOUT]
+     devreg:  DC_DC.VOUT
      width: 16
      rw:  ro
      dtype: double