gpio: axp209: use correct register for GPIO input status

The GPIO input status was read from control register
(AXP20X_GPIO[210]_CTRL) instead of status register (AXP20X_GPIO20_SS).

Signed-off-by: Quentin Schulz <[e-mail]>
Signed-off-by: Linus Walleij <[e-mail]>

drivers/gpio/gpio-axp209.c

···
 {
 	struct axp20x_gpio *gpio = gpiochip_get_data(chip);
 	unsigned int val;
-	int reg, ret;
+	int ret;
 
-	reg = axp20x_gpio_get_reg(offset);
-	if (reg < 0)
-		return reg;
-
-	ret = regmap_read(gpio->regmap, reg, &val);
+	ret = regmap_read(gpio->regmap, AXP20X_GPIO20_SS, &val);
 	if (ret)
 		return ret;