pinctrl: owl: use new GPIO 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.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/20250424-gpiochip-set-rv-pinctrl-part2-v1-4-504f91120b99@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Author: Bartosz Golaszewski

drivers/pinctrl/actions/pinctrl-owl.c

@@ -598,7 +598,7 @@ static int owl_gpio_get(struct gpio_chip *chip, unsigned int offset)
 	return !!(val & BIT(offset));
 }
 
-static void owl_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
+static int owl_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
 {
 	struct owl_pinctrl *pctrl = gpiochip_get_data(chip);
 	const struct owl_gpio_port *port;
@@ -607,13 +607,15 @@ static void owl_gpio_set(struct gpio_chip *chip, unsigned int offset, int value)
 
 	port = owl_gpio_get_port(pctrl, &offset);
 	if (WARN_ON(port == NULL))
-		return;
+		return -ENODEV;
 
 	gpio_base = pctrl->base + port->offset;
 
 	raw_spin_lock_irqsave(&pctrl->lock, flags);
 	owl_gpio_update_reg(gpio_base + port->dat, offset, value);
 	raw_spin_unlock_irqrestore(&pctrl->lock, flags);
+
+	return 0;
 }
 
 static int owl_gpio_direction_input(struct gpio_chip *chip, unsigned int offset)
@@ -960,7 +962,7 @@ int owl_pinctrl_probe(struct platform_device *pdev,
 	pctrl->chip.direction_input  = owl_gpio_direction_input;
 	pctrl->chip.direction_output = owl_gpio_direction_output;
 	pctrl->chip.get = owl_gpio_get;
-	pctrl->chip.set = owl_gpio_set;
+	pctrl->chip.set_rv = owl_gpio_set;
 	pctrl->chip.request = owl_gpio_request;
 	pctrl->chip.free = owl_gpio_free;