ARM: orion/gpio: 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: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20250407-gpiochip-set-rv-arm-v1-1-9e4a914c7fd4@linaro.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Author: Bartosz Golaszewski

arch/arm/plat-orion/gpio.c

@@ -211,14 +211,16 @@ orion_gpio_direction_output(struct gpio_chip *chip, unsigned pin, int value)
 	return 0;
 }
 
-static void orion_gpio_set(struct gpio_chip *chip, unsigned pin, int value)
+static int orion_gpio_set(struct gpio_chip *chip, unsigned int pin, int value)
 {
 	struct orion_gpio_chip *ochip = gpiochip_get_data(chip);
 	unsigned long flags;
 
 	spin_lock_irqsave(&ochip->lock, flags);
 	__set_level(ochip, pin, value);
 	spin_unlock_irqrestore(&ochip->lock, flags);
+
+	return 0;
 }
 
 static int orion_gpio_to_irq(struct gpio_chip *chip, unsigned pin)
@@ -540,7 +542,7 @@ void __init orion_gpio_init(int gpio_base, int ngpio,
 	ochip->chip.direction_input = orion_gpio_direction_input;
 	ochip->chip.get = orion_gpio_get;
 	ochip->chip.direction_output = orion_gpio_direction_output;
-	ochip->chip.set = orion_gpio_set;
+	ochip->chip.set_rv = orion_gpio_set;
 	ochip->chip.to_irq = orion_gpio_to_irq;
 	ochip->chip.base = gpio_base;
 	ochip->chip.ngpio = ngpio;