i2c: Get rid of struct i2c_client_address_data

Struct i2c_client_address_data only contains one field at this point,
which makes its usefulness questionable. Get rid of it and pass simple
address lists around instead.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
diff --git a/drivers/hwmon/pcf8591.c b/drivers/hwmon/pcf8591.c
index 4355aad..c19e61b 100644
--- a/drivers/hwmon/pcf8591.c
+++ b/drivers/hwmon/pcf8591.c
@@ -299,7 +299,7 @@
 
 	.class		= I2C_CLASS_HWMON,	/* Nearest choice */
 	.detect		= pcf8591_detect,
-	.address_data	= &addr_data,
+	.address_list	= normal_i2c,
 };
 
 static int __init pcf8591_init(void)