gpio: Rename free() to rfree()

This function name conflicts with our desire to #define free() to
something else on sandbox. Since it deals with resources, rename it to
rfree().
Signed-off-by: NSimon Glass <sjg@chromium.org>

drivers/gpio/gpio-rcar.c

@@ -128,7 +128,7 @@ static int rcar_gpio_free(struct udevice *dev, unsigned offset)
 
 static const struct dm_gpio_ops rcar_gpio_ops = {
 	.request		= rcar_gpio_request,
-	.free			= rcar_gpio_free,
+	.rfree			= rcar_gpio_free,
 	.direction_input	= rcar_gpio_direction_input,
 	.direction_output	= rcar_gpio_direction_output,
 	.get_value		= rcar_gpio_get_value,

drivers/gpio/gpio-uclass.c

@@ -364,8 +364,8 @@ int _dm_gpio_free(struct udevice *dev, uint offset)
 	uc_priv = dev_get_uclass_priv(dev);
 	if (!uc_priv->name[offset])
 		return -ENXIO;
-	if (gpio_get_ops(dev)->free) {
-		ret = gpio_get_ops(dev)->free(dev, offset);
+	if (gpio_get_ops(dev)->rfree) {
+		ret = gpio_get_ops(dev)->rfree(dev, offset);
 		if (ret)
 			return ret;
 	}
@@ -1043,8 +1043,8 @@ static int gpio_post_bind(struct udevice *dev)
 	if (!reloc_done) {
 		if (ops->request)
 			ops->request += gd->reloc_off;
-		if (ops->free)
-			ops->free += gd->reloc_off;
+		if (ops->rfree)
+			ops->rfree += gd->reloc_off;
 		if (ops->direction_input)
 			ops->direction_input += gd->reloc_off;
 		if (ops->direction_output)

include/asm-generic/gpio.h

@@ -248,7 +248,7 @@ int gpio_xlate_offs_flags(struct udevice *dev, struct gpio_desc *desc,
  */
 struct dm_gpio_ops {
 	int (*request)(struct udevice *dev, unsigned offset, const char *label);
-	int (*free)(struct udevice *dev, unsigned offset);
+	int (*rfree)(struct udevice *dev, unsigned int offset);
 	int (*direction_input)(struct udevice *dev, unsigned offset);
 	int (*direction_output)(struct udevice *dev, unsigned offset,
 				int value);