gpiolib: Allow to use setters with return value for output-only gpios

The gpiod_direction_output_raw_commit() function checks if any setter
callback is present before doing anything. As the new GPIO setters with
return values were introduced, make this check also succeed if one is
present.

Fixes: 98ce1eb ("gpiolib: introduce gpio_chip setters that return values")
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Link: https://lore.kernel.org/r/20250411-mdb-gpiolib-setters-fix-v2-1-9611280d8822@bootlin.com
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>

Author: mbriand

drivers/gpio/gpiolib.c

@@ -2879,7 +2879,7 @@ static int gpiod_direction_output_raw_commit(struct gpio_desc *desc, int value)
 	 * output-only, but if there is then not even a .set() operation it
 	 * is pretty tricky to drive the output line.
 	 */
-	if (!guard.gc->set && !guard.gc->direction_output) {
+	if (!guard.gc->set && !guard.gc->set_rv && !guard.gc->direction_output) {
 		gpiod_warn(desc,
 			   "%s: missing set() and direction_output() operations\n",
 			   __func__);