pinctrl: microchip-sgpio: 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/20250424-gpiochip-set-rv-pinctrl-part2-v1-7-504f91120b99@linaro.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Author: Bartosz Golaszewski

drivers/pinctrl/pinctrl-microchip-sgpio.c

@@ -555,10 +555,10 @@ static int microchip_sgpio_get_direction(struct gpio_chip *gc, unsigned int gpio
 	return bank->is_input ? GPIO_LINE_DIRECTION_IN : GPIO_LINE_DIRECTION_OUT;
 }
 
-static void microchip_sgpio_set_value(struct gpio_chip *gc,
-				unsigned int gpio, int value)
+static int microchip_sgpio_set_value(struct gpio_chip *gc, unsigned int gpio,
+				     int value)
 {
-	microchip_sgpio_direction_output(gc, gpio, value);
+	return microchip_sgpio_direction_output(gc, gpio, value);
 }
 
 static int microchip_sgpio_get_value(struct gpio_chip *gc, unsigned int gpio)
@@ -858,7 +858,7 @@ static int microchip_sgpio_register_bank(struct device *dev,
 	gc->direction_input	= microchip_sgpio_direction_input;
 	gc->direction_output	= microchip_sgpio_direction_output;
 	gc->get			= microchip_sgpio_get_value;
-	gc->set			= microchip_sgpio_set_value;
+	gc->set_rv		= microchip_sgpio_set_value;
 	gc->request		= gpiochip_generic_request;
 	gc->free		= gpiochip_generic_free;
 	gc->of_xlate		= microchip_sgpio_of_xlate;