Add SensorDeviceClass and unit for LCN humidity sensor. (home-assistant#155044)

Author: alengwenus

homeassistant/components/lcn/sensor.py

@@ -18,6 +18,7 @@
     CONF_SOURCE,
     CONF_UNIT_OF_MEASUREMENT,
     LIGHT_LUX,
+    PERCENTAGE,
     UnitOfElectricCurrent,
     UnitOfElectricPotential,
     UnitOfSpeed,
@@ -50,6 +51,7 @@
     pypck.lcn_defs.VarUnit.VOLT: SensorDeviceClass.VOLTAGE,
     pypck.lcn_defs.VarUnit.AMPERE: SensorDeviceClass.CURRENT,
     pypck.lcn_defs.VarUnit.PPM: SensorDeviceClass.CO2,
+    pypck.lcn_defs.VarUnit.PERCENT: SensorDeviceClass.HUMIDITY,
 }
 
 UNIT_OF_MEASUREMENT_MAPPING = {
@@ -62,6 +64,7 @@
     pypck.lcn_defs.VarUnit.VOLT: UnitOfElectricPotential.VOLT,
     pypck.lcn_defs.VarUnit.AMPERE: UnitOfElectricCurrent.AMPERE,
     pypck.lcn_defs.VarUnit.PPM: CONCENTRATION_PARTS_PER_MILLION,
+    pypck.lcn_defs.VarUnit.PERCENT: PERCENTAGE,
 }