macintosh: 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: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230310144735.1546817-1-robh@kernel.org

drivers/macintosh/rack-meter.c

@@ -387,7 +387,7 @@ static int rackmeter_probe(struct macio_dev* mdev,
 	       if (of_node_name_eq(np, "lightshow"))
 		       break;
 	       if (of_node_name_eq(np, "sound") &&
-		   of_get_property(np, "virtual", NULL) != NULL)
+		   of_property_present(np, "virtual"))
 		       break;
 	}
 	if (np == NULL) {

drivers/macintosh/therm_adt746x.c

@@ -483,7 +483,7 @@ static int probe_thermostat(struct i2c_client *client)
 	if (vers != 1)
 		return -ENXIO;
 
-	if (of_get_property(np, "hwsensor-location", NULL)) {
+	if (of_property_present(np, "hwsensor-location")) {
 		for (i = 0; i < 3; i++) {
 			sensor_location[i] = of_get_property(np,
 					"hwsensor-location", NULL) + offset;