z2_battery: Fix count of properties

PROP_STATUS property was not counted, as result VOLTAGE_MIN property is
missing in sysfs. Fix it.

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
diff --git a/drivers/power/z2_battery.c b/drivers/power/z2_battery.c
index 81304c0..2a9ab89 100644
--- a/drivers/power/z2_battery.c
+++ b/drivers/power/z2_battery.c
@@ -134,6 +134,8 @@
 	enum power_supply_property *prop;
 	struct z2_battery_info *info = charger->info;
 
+	if (info->charge_gpio >= 0)
+		props++;	/* POWER_SUPPLY_PROP_STATUS */
 	if (info->batt_tech >= 0)
 		props++;	/* POWER_SUPPLY_PROP_TECHNOLOGY */
 	if (info->batt_I2C_reg >= 0)