power_supply: Update power_supply_is_watt_property

Update the power_supply_is_watt_property function to include POWER_NOW.

Signed-off-by: Rhyland Klein <[e-mail]>
Signed-off-by: Anton Vorontsov <[e-mail]>

include/linux/power_supply.h

···
 	case POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN:
 	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
 	case POWER_SUPPLY_PROP_VOLTAGE_AVG:
+	case POWER_SUPPLY_PROP_POWER_NOW:
 		return 1;
 	default:
 		break;