of: property: Delete of_devlink kernel commandline option

With the addition of fw_devlink kernel commandline option, of_devlink is
redundant and not useful anymore. So, delete it.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20200222014038.180923-6-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Documentation/admin-guide/kernel-parameters.txt

@@ -3299,12 +3299,6 @@
 			This can be set from sysctl after boot.
 			See Documentation/admin-guide/sysctl/vm.rst for details.
 
-	of_devlink	[OF, KNL] Create device links between consumer and
-			supplier devices by scanning the devictree to infer the
-			consumer/supplier relationships.  A consumer device
-			will not be probed until all the supplier devices have
-			probed successfully.
-
 	ohci1394_dma=early	[HW] enable debugging via the ohci1394 driver.
 			See Documentation/debugging-via-ohci1394.txt for more
 			info.

drivers/of/property.c

@@ -1299,15 +1299,9 @@ static int of_link_to_suppliers(struct device *dev,
 	return ret;
 }
 
-static bool of_devlink;
-core_param(of_devlink, of_devlink, bool, 0);
-
 static int of_fwnode_add_links(const struct fwnode_handle *fwnode,
 			       struct device *dev)
 {
-	if (!of_devlink)
-		return 0;
-
 	if (unlikely(!is_of_node(fwnode)))
 		return 0;