Revert "of/platform: Fix fn definitons for of_link_is_valid() and of_link_property()"

This reverts commit 0ad0bdd8.

Based on a lot of email and in-person discussions, this patch series is
being reworked to address a number of issues that were pointed out that
needed to be taken care of before it should be merged.  It will be
resubmitted with those changes hopefully soon.

Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Saravana Kannan <saravanak@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/of/platform.c

@@ -506,7 +506,7 @@ int of_platform_default_populate(struct device_node *root,
 }
 EXPORT_SYMBOL_GPL(of_platform_default_populate);
 
-static bool of_link_is_valid(struct device_node *con, struct device_node *sup)
+bool of_link_is_valid(struct device_node *con, struct device_node *sup)
 {
 	of_node_get(sup);
 	/*
@@ -625,7 +625,7 @@ static const struct supplier_bindings bindings[] = {
 	{ },
 };
 
-static int of_link_property(struct device *dev, struct device_node *con_np,
+static bool of_link_property(struct device *dev, struct device_node *con_np,
 			     const char *prop)
 {
 	struct device_node *phandle;