pinctrl: microchip-sgpio: Switch to use fwnode instead of of_node

GPIO library now accepts fwnode as a firmware node, so
switch the driver to use it.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220503151517.59115-1-andriy.shevchenko@linux.intel.comSigned-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/pinctrl/pinctrl-microchip-sgpio.c

@@ -848,7 +848,7 @@ static int microchip_sgpio_register_bank(struct device *dev,
 	gc			= &bank->gpio;
 	gc->label		= pctl_desc->name;
 	gc->parent		= dev;
-	gc->of_node		= to_of_node(fwnode);
+	gc->fwnode		= fwnode;
 	gc->owner		= THIS_MODULE;
 	gc->get_direction	= microchip_sgpio_get_direction;
 	gc->direction_input	= microchip_sgpio_direction_input;