power: supply: generic-adc-battery: Use GPIO descriptors

This driver uses platform data to pass GPIO lines using the
deprecated global GPIO numbers. There are no in-tree users
of this platform data.

Any out-of-tree or coming users of this driver can easily be
migrated to use machine descriptor tables as described in
Documentation/driver-api/gpio/board.rst
section "platform data".

Cc: Anish Kumar <anish198519851985@gmail.com>
Cc: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

include/linux/power/generic-adc-battery.h

@@ -11,16 +11,12 @@
  * @battery_info:         recommended structure to specify static power supply
  *			   parameters
  * @cal_charge:           calculate charge level.
- * @gpio_charge_finished: gpio for the charger.
- * @gpio_inverted:        Should be 1 if the GPIO is active low otherwise 0
  * @jitter_delay:         delay required after the interrupt to check battery
  *			  status.Default set is 10ms.
  */
 struct gab_platform_data {
 	struct power_supply_info battery_info;
 	int	(*cal_charge)(long value);
-	int	gpio_charge_finished;
-	bool	gpio_inverted;
 	int     jitter_delay;
 };