i2c: powermac: use true,false for bool variable

In i2c_powermac_register_devices(), variable 'found_onyx' is bool and
assigned '0' and 'true' in different places. Use 'false' instead of '0'.
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-powermac.c

@@ -315,7 +315,7 @@ static void i2c_powermac_register_devices(struct i2c_adapter *adap,
 {
 	struct i2c_client *newdev;
 	struct device_node *node;
-	bool found_onyx = 0;
+	bool found_onyx = false;
 
 	/*
 	 * In some cases we end up with the via-pmu node itself, in this