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/[e-mail]
Signed-off-by: Bartosz Golaszewski <[e-mail]>

drivers/gpio/gpio-aspeed.c

···
 	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;
···
 
 	if (copro)
 		aspeed_gpio_copro_release(gpio, offset);
+
+	return 0;
 }
 
 static int aspeed_gpio_dir_in(struct gpio_chip *gc, unsigned int offset)
···
 	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;