i2c: Stop using i2c_adapter.class_dev

Stop using i2c_adapter.class_dev, as it is going to be removed
soon. Luckily, there are only 4 RTC drivers affected.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>

drivers/rtc/rtc-ds1672.c

@@ -199,7 +199,7 @@ static int ds1672_probe(struct i2c_adapter *adapter, int address, int kind)
 	struct i2c_client *client;
 	struct rtc_device *rtc;
 
-	dev_dbg(adapter->class_dev.dev, "%s\n", __FUNCTION__);
+	dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
 
 	if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
 		err = -ENODEV;

drivers/rtc/rtc-pcf8563.c

@@ -279,7 +279,7 @@ static int pcf8563_probe(struct i2c_adapter *adapter, int address, int kind)
 
 	int err = 0;
 
-	dev_dbg(adapter->class_dev.dev, "%s\n", __FUNCTION__);
+	dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
 
 	if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
 		err = -ENODEV;

drivers/rtc/rtc-rs5c372.c

@@ -499,7 +499,7 @@ static int rs5c372_probe(struct i2c_adapter *adapter, int address, int kind)
 	struct rs5c372 *rs5c372;
 	struct rtc_time tm;
 
-	dev_dbg(adapter->class_dev.dev, "%s\n", __FUNCTION__);
+	dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
 
 	if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
 		err = -ENODEV;

drivers/rtc/rtc-x1205.c

@@ -506,7 +506,7 @@ static int x1205_probe(struct i2c_adapter *adapter, int address, int kind)
 	struct i2c_client *client;
 	struct rtc_device *rtc;
 
-	dev_dbg(adapter->class_dev.dev, "%s\n", __FUNCTION__);
+	dev_dbg(&adapter->dev, "%s\n", __FUNCTION__);
 
 	if (!i2c_check_functionality(adapter, I2C_FUNC_I2C)) {
 		err = -ENODEV;