of: property: Don't add links to absent suppliers

If driver core marks a firmware node as not a device, don't add fwnode
links where it's a supplier.

Fixes: e590474 ("driver core: Set fw_devlink=on by default")
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20210205222644.2357303-3-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/of/property.c

@@ -1103,7 +1103,9 @@ static int of_link_to_phandle(struct device_node *con_np,
 	 * created for them.
 	 */
 	sup_dev = get_dev_from_fwnode(&sup_np->fwnode);
-	if (!sup_dev && of_node_check_flag(sup_np, OF_POPULATED)) {
+	if (!sup_dev &&
+	    (of_node_check_flag(sup_np, OF_POPULATED) ||
+	     sup_np->fwnode.flags & FWNODE_FLAG_NOT_DEVICE)) {
 		pr_debug("Not linking %pOFP to %pOFP - No struct device\n",
 			 con_np, sup_np);
 		of_node_put(sup_np);