leds: Use fwnode_for_each_child_node() instead

fwnode_for_each_child_node() is now the same as
fwnode_for_each_available_child_node() on all backends (OF, ACPI and
swnode). In order to remove the available variants, switch the uses to
non-available variants.

Signed-off-by: Sakari Ailus <[e-mail]>
Reviewed-by: Jonathan Cameron <[e-mail]>
Reviewed-by: Laurent Pinchart <[e-mail]>
Signed-off-by: Lee Jones <[e-mail]>

drivers/leds/leds-max5970.c

···
 	if (!led_node)
 		return -ENODEV;
 
-	fwnode_for_each_available_child_node(led_node, child) {
+	fwnode_for_each_child_node(led_node, child) {
 		u32 reg;
 
 		if (fwnode_property_read_u32(child, "reg", &reg))

drivers/leds/leds-max77705.c

···
 		cdev->brightness_set_blocking = max77705_led_brightness_set_multi;
 		cdev->blink_set = max77705_rgb_blink;
 
-		fwnode_for_each_available_child_node(np, child) {
+		fwnode_for_each_child_node(np, child) {
 			ret = max77705_parse_subled(dev, child, &info[i]);
 			if (ret < 0)
 				return ret;

drivers/leds/rgb/leds-ktd202x.c

···
 	int i = 0;
 
 	num_channels = 0;
-	fwnode_for_each_available_child_node(fwnode, child)
+	fwnode_for_each_child_node(fwnode, child)
 		num_channels++;
 
 	if (!num_channels || num_channels > chip->num_leds)
···
 	if (!info)
 		return -ENOMEM;
 
-	fwnode_for_each_available_child_node(fwnode, child) {
+	fwnode_for_each_child_node(fwnode, child) {
 		u32 mono_color;
 		u32 reg;
 		int ret;

drivers/leds/rgb/leds-ncp5623.c

···
 		goto release_mc_node;
 	}
 
-	fwnode_for_each_available_child_node(mc_node, led_node) {
+	fwnode_for_each_child_node(mc_node, led_node) {
 		ret = fwnode_property_read_u32(led_node, "color", &color_index);
 		if (ret)
 			goto release_led_node;