w1/slaves: use pr_* instead of printk

This patch replaces all calls to the "printk" function within the "slaves"
subdirectory by calls to the appropriate "pr_*" function thus addressing
the following warning generated by the checkpatch script:

WARNING: Prefer [subsystem eg: netdev]_err([subsystem]dev, ...
        then dev_err(dev, ... then pr_err(...  to printk(KERN_ERR ...
Signed-off-by: NFjodor Schelichow <fjodor.schelichow@hotmail.com>
Signed-off-by: NRoman Sommer <romsom2@yahoo.de>
Acked-by: NEvgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/w1/slaves/w1_ds2760.c

@@ -181,8 +181,7 @@ static struct w1_family w1_ds2760_family = {
 
 static int __init w1_ds2760_init(void)
 {
-	printk(KERN_INFO "1-Wire driver for the DS2760 battery monitor "
-	       " chip  - (c) 2004-2005, Szabolcs Gyurko\n");
+	pr_info("1-Wire driver for the DS2760 battery monitor chip - (c) 2004-2005, Szabolcs Gyurko\n");
 	ida_init(&bat_ida);
 	return w1_register_family(&w1_ds2760_family);
 }