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/drivers/pci/pcie_mediatek.c b/drivers/pci/pcie_mediatek.c
index 051a3bc..c6e30e2 100644
--- a/drivers/pci/pcie_mediatek.c
+++ b/drivers/pci/pcie_mediatek.c
@@ -657,7 +657,7 @@
 		struct fdt_pci_addr addr;
 		u32 slot = 0;
 
-		if (!ofnode_is_available(subnode))
+		if (!ofnode_is_enabled(subnode))
 			continue;
 
 		err = ofnode_read_pci_addr(subnode, 0, "reg", &addr);
@@ -696,7 +696,7 @@
 	pcie->priv = dev;
 
 	dev_for_each_subnode(subnode, dev) {
-		if (!ofnode_is_available(subnode))
+		if (!ofnode_is_enabled(subnode))
 			continue;
 
 		err = ofnode_read_pci_addr(subnode, 0, "reg", &addr);