gpio: bd71828: use new line value setter callbacks

struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.

Reviewed-by: Matti Vaittinen <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Bartosz Golaszewski <[e-mail]>

drivers/gpio/gpio-bd71828.c

···
 	struct gpio_chip gpio;
 };
 
-static void bd71828_gpio_set(struct gpio_chip *chip, unsigned int offset,
-			     int value)
+static int bd71828_gpio_set(struct gpio_chip *chip, unsigned int offset,
+			    int value)
 {
-	int ret;
 	struct bd71828_gpio *bdgpio = gpiochip_get_data(chip);
 	u8 val = (value) ? BD71828_GPIO_OUT_HI : BD71828_GPIO_OUT_LO;
 
···
 	 * we are dealing with - then we are done
 	 */
 	if (offset == HALL_GPIO_OFFSET)
-		return;
+		return 0;
 
-	ret = regmap_update_bits(bdgpio->regmap, GPIO_OUT_REG(offset),
-				 BD71828_GPIO_OUT_MASK, val);
-	if (ret)
-		dev_err(bdgpio->dev, "Could not set gpio to %d\n", value);
+	return regmap_update_bits(bdgpio->regmap, GPIO_OUT_REG(offset),
+				  BD71828_GPIO_OUT_MASK, val);
 }
 
 static int bd71828_gpio_get(struct gpio_chip *chip, unsigned int offset)
···
 	bdgpio->gpio.set_config = bd71828_gpio_set_config;
 	bdgpio->gpio.can_sleep = true;
 	bdgpio->gpio.get = bd71828_gpio_get;
-	bdgpio->gpio.set = bd71828_gpio_set;
+	bdgpio->gpio.set_rv = bd71828_gpio_set;
 	bdgpio->gpio.base = -1;
 
 	/*