gpio: aspeed: 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.

Link: https://lore.kernel.org/r/20250303-gpiochip-set-conversion-v1-13-1d5cceeebf8b@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Author: Bartosz Golaszewski

drivers/gpio/gpio-aspeed.c

@@ -424,8 +424,7 @@ static void __aspeed_gpio_set(struct gpio_chip *gc, unsigned int offset,
 	gpio->config->llops->reg_bit_get(gpio, offset, reg_val);
 }
 
-static void aspeed_gpio_set(struct gpio_chip *gc, unsigned int offset,
-			    int val)
+static int aspeed_gpio_set(struct gpio_chip *gc, unsigned int offset, int val)
 {
 	struct aspeed_gpio *gpio = gpiochip_get_data(gc);
 	bool copro = false;
@@ -438,6 +437,8 @@ static void aspeed_gpio_set(struct gpio_chip *gc, unsigned int offset,
 
 	if (copro)
 		aspeed_gpio_copro_release(gpio, offset);
+
+	return 0;
 }
 
 static int aspeed_gpio_dir_in(struct gpio_chip *gc, unsigned int offset)
@@ -1351,7 +1352,7 @@ static int aspeed_gpio_probe(struct platform_device *pdev)
 	gpio->chip.request = aspeed_gpio_request;
 	gpio->chip.free = aspeed_gpio_free;
 	gpio->chip.get = aspeed_gpio_get;
-	gpio->chip.set = aspeed_gpio_set;
+	gpio->chip.set_rv = aspeed_gpio_set;
 	gpio->chip.set_config = aspeed_gpio_set_config;
 	gpio->chip.label = dev_name(&pdev->dev);
 	gpio->chip.base = -1;