leds: gpio: Keep driver firmware interface agnostic

The of.h is used as a proxy to mod_devicetable, replace former by
latter.

The commit 2d61801 ("leds: gpio: Configure per-LED pin control")
added yet another unneeded OF APIs. Replace with direct use of fwnode.

Altogether this makes driver agnostic to the firmware interface in use.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20231016161005.1471768-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Lee Jones <lee@kernel.org>

Author: andy-shev

drivers/leds/leds-gpio.c

@@ -11,8 +11,8 @@
 #include <linux/gpio/consumer.h>
 #include <linux/kernel.h>
 #include <linux/leds.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
 #include <linux/pinctrl/consumer.h>
 #include <linux/platform_device.h>
 #include <linux/property.h>
@@ -129,8 +129,8 @@ static int create_gpio_led(const struct gpio_led *template,
 		ret = PTR_ERR(pinctrl);
 		if (ret != -ENODEV) {
 			dev_warn(led_dat->cdev.dev,
-				 "Failed to select %pOF pinctrl: %d\n",
-				 to_of_node(fwnode), ret);
+				 "Failed to select %pfw pinctrl: %d\n",
+				 fwnode, ret);
 		} else {
 			/* pinctrl-%d not present, not an error */
 			ret = 0;