power: supply: cpcap-battery: Fix low battery check

We need to check current instead of the charge counter to see if
a charger is connected. The charge counter shows the cumulated value
instead of the current charge current and can be negative or positive.

Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/cpcap-battery.c

@@ -562,11 +562,11 @@ static irqreturn_t cpcap_battery_irq_thread(int irq, void *data)
 
 	switch (d->action) {
 	case CPCAP_BATTERY_IRQ_ACTION_BATTERY_LOW:
-		if (latest->counter_uah >= 0)
+		if (latest->current_ua >= 0)
 			dev_warn(ddata->dev, "Battery low at 3.3V!\n");
 		break;
 	case CPCAP_BATTERY_IRQ_ACTION_POWEROFF:
-		if (latest->counter_uah >= 0) {
+		if (latest->current_ua >= 0) {
 			dev_emerg(ddata->dev,
 				  "Battery empty at 3.1V, powering off\n");
 			orderly_poweroff(true);