dm: core: Drop ofnode_is_available()

This function is also available as ofnode_is_enabled(), so use that
instead.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/arch/arm/mach-tegra/xusb-padctl-common.c b/arch/arm/mach-tegra/xusb-padctl-common.c
index 8bdd44a..388ec49 100644
--- a/arch/arm/mach-tegra/xusb-padctl-common.c
+++ b/arch/arm/mach-tegra/xusb-padctl-common.c
@@ -282,7 +282,7 @@
 	debug("%s: count=%d\n", __func__, count);
 	for (i = 0; i < count; i++) {
 		debug("%s: i=%d, node=%p\n", __func__, i, nodes[i].np);
-		if (!ofnode_is_available(nodes[i]))
+		if (!ofnode_is_enabled(nodes[i]))
 			continue;
 
 		padctl.socdata = socdata;