power: supply: max17042_battery: use VF SOC register for capacity pro…

…perty

The capacity property uses the RepSOC register to report the current state
of charge. This register did not provide a reliable SOC value during my
testing with the max17047 variant on a Galaxy S3 (Trats2/GT-I9300). The
reported value did not change or even stayed 0 in some cases.
However, the VF SOC register provided an accurate SOC value at all times.
It uses the voltage fuel gauge to determine the SOC.

Signed-off-by: Wolfgang Wiedmeyer <wolfgit@wiedmeyer.de>

drivers/power/supply/max17042_battery.c

@@ -316,7 +316,7 @@ static int max17042_get_property(struct power_supply *psy,
 		val->intval = data * 625 / 8;
 		break;
 	case POWER_SUPPLY_PROP_CAPACITY:
-		ret = regmap_read(map, MAX17042_RepSOC, &data);
+		ret = regmap_read(map, MAX17042_VFSOC, &data);
 		if (ret < 0)
 			return ret;