power: supply: rt5033_battery: Change voltage values to µV

Currently the rt5033_battery driver provides voltage values in mV. It
should be µV as stated in Documentation/power/power_supply_class.rst.

Fixes: b847dd96 ("power: rt5033_battery: Add RT5033 Fuel gauge device driver")
Cc: Beomho Seo <beomho.seo@samsung.com>
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Jakob Hauser <jahau@rocketmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/rt5033_battery.c

@@ -60,7 +60,7 @@ static int rt5033_battery_get_watt_prop(struct i2c_client *client,
 	regmap_read(battery->regmap, regh, &msb);
 	regmap_read(battery->regmap, regl, &lsb);
 
-	ret = ((msb << 4) + (lsb >> 4)) * 1250 / 1000;
+	ret = ((msb << 4) + (lsb >> 4)) * 1250;
 
 	return ret;
 }