gpio: shared: assign the correct firmware node for reset-gpio use-case

When we defer probe due to unlucky timing of adding the lookup table, we
assign the matching firmware node to the shared reference for the future
probing. However, the fwnode we assign is wrong so fix it and assign the
one associated with the reset-gpio device.

Fixes: 4941648 ("gpio: shared: allow sharing a reset-gpios pin between reset-gpio and gpiolib")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Closes: https://lore.kernel.org/all/00107523-7737-4b92-a785-14ce4e93b8cb@samsung.com/
Tested-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20260106-gpio-shared-fixes-v2-1-c7091d2f7581@oss.qualcomm.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>

Author: Bartosz Golaszewski

drivers/gpio/gpiolib-shared.c

@@ -417,7 +417,7 @@ static bool gpio_shared_dev_is_reset_gpio(struct device *consumer,
 		 * Reuse the fwnode of the real device, next time we'll use it
 		 * in the normal path.
 		 */
-		ref->fwnode = fwnode_handle_get(real_ref->fwnode);
+		ref->fwnode = fwnode_handle_get(reset_fwnode);
 		return true;
 	}