soc: fsl: qe: 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>
Link: https://lore.kernel.org/r/20250610-gpiochip-set-rv-soc-v1-1-1a0c36c9deed@linaro.org
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>

Author: Bartosz Golaszewski

drivers/soc/fsl/qe/gpio.c

@@ -57,7 +57,7 @@ static int qe_gpio_get(struct gpio_chip *gc, unsigned int gpio)
 	return !!(ioread32be(&regs->cpdata) & pin_mask);
 }
 
-static void qe_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
+static int qe_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
 {
 	struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc);
 	struct qe_gpio_chip *qe_gc = gpiochip_get_data(gc);
@@ -75,6 +75,8 @@ static void qe_gpio_set(struct gpio_chip *gc, unsigned int gpio, int val)
 	iowrite32be(qe_gc->cpdata, &regs->cpdata);
 
 	spin_unlock_irqrestore(&qe_gc->lock, flags);
+
+	return 0;
 }
 
 static void qe_gpio_set_multiple(struct gpio_chip *gc,
@@ -317,7 +319,7 @@ static int __init qe_add_gpiochips(void)
 		gc->direction_input = qe_gpio_dir_in;
 		gc->direction_output = qe_gpio_dir_out;
 		gc->get = qe_gpio_get;
-		gc->set = qe_gpio_set;
+		gc->set_rv = qe_gpio_set;
 		gc->set_multiple = qe_gpio_set_multiple;
 
 		ret = of_mm_gpiochip_add_data(np, mm_gc, qe_gc);