bcma: gpio: 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>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220504092525.71668-1-andriy.shevchenko@linux.intel.com

drivers/bcma/driver_gpio.c

@@ -11,6 +11,8 @@
 #include <linux/gpio/driver.h>
 #include <linux/interrupt.h>
 #include <linux/export.h>
+#include <linux/property.h>
+
 #include <linux/bcma/bcma.h>
 
 #include "bcma_private.h"
@@ -182,9 +184,8 @@ int bcma_gpio_init(struct bcma_drv_cc *cc)
 	chip->direction_input	= bcma_gpio_direction_input;
 	chip->direction_output	= bcma_gpio_direction_output;
 	chip->parent		= bus->dev;
-#if IS_BUILTIN(CONFIG_OF)
-	chip->of_node		= cc->core->dev.of_node;
-#endif
+	chip->fwnode		= dev_fwnode(&cc->core->dev);
+
 	switch (bus->chipinfo.id) {
 	case BCMA_CHIP_ID_BCM4707:
 	case BCMA_CHIP_ID_BCM5357: