power: reset: Convert to using %pOFn instead of device_node.name

In preparation to remove the node name pointer from struct device_node,
convert printf users to use the %pOFn format specifier.

Cc: Sebastian Reichel <sre@kernel.org>
Cc: linux-pm@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>

drivers/power/reset/axxia-reset.c

@@ -65,7 +65,7 @@ static int axxia_reset_probe(struct platform_device *pdev)
 
 	syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon");
 	if (IS_ERR(syscon)) {
-		pr_err("%s: syscon lookup failed\n", dev->of_node->name);
+		pr_err("%pOFn: syscon lookup failed\n", dev->of_node);
 		return PTR_ERR(syscon);
 	}