PM / devfreq: exynos: 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: Chanwoo Choi <cw00.choi@samsung.com>

drivers/devfreq/exynos-bus.c

@@ -432,7 +432,7 @@ static int exynos_bus_probe(struct platform_device *pdev)
 		goto err;
 
 	/* Create child platform device for the interconnect provider */
-	if (of_get_property(dev->of_node, "#interconnect-cells", NULL)) {
+	if (of_property_present(dev->of_node, "#interconnect-cells")) {
 		bus->icc_pdev = platform_device_register_data(
 						dev, "exynos-generic-icc",
 						PLATFORM_DEVID_AUTO, NULL, 0);