ARM: mxs: Use of_property_present() for testing DT property presence

It is preferred to use typed property access functions (i.e.
of_property_read_<type> functions) rather than low-level
of_get_property/of_find_property functions for reading properties. As
part of this, convert of_get_property/of_find_property calls to the
recently added of_property_present() helper when we just want to test
for presence of a property and nothing more.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm/mach-mxs/mach-mxs.c

@@ -174,7 +174,7 @@ static void __init update_fec_mac_prop(enum mac_oui oui)
 
 		from = np;
 
-		if (of_get_property(np, "local-mac-address", NULL))
+		if (of_property_present(np, "local-mac-address"))
 			continue;
 
 		newmac = kzalloc(sizeof(*newmac) + 6, GFP_KERNEL);