libfdt: Sync fdt_for_each_subnode() with upstream

The signature for this macro has changed. Bring in the upstream version and
adjust U-Boot's usages to suit.

Signed-off-by: Simon Glass <sjg@chromium.org>
Update to drivers/power/pmic/palmas.c:
Signed-off-by: Keerthy <j-keerthy@ti.com>

Change-Id: I6cc9021339bfe686f9df21d61a1095ca2b3776e8
diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c
index 46470ea..30f7cfc 100644
--- a/drivers/pinctrl/meson/pinctrl-meson.c
+++ b/drivers/pinctrl/meson/pinctrl-meson.c
@@ -154,7 +154,7 @@
 		return -EINVAL;
 	}
 
-	fdt_for_each_subnode(gd->fdt_blob, node, dev->of_offset) {
+	fdt_for_each_subnode(node, gd->fdt_blob, dev->of_offset) {
 		if (fdt_getprop(gd->fdt_blob, node, "gpio-controller", &len)) {
 			gpio = node;
 			break;