i2c: Add missing KERN_* constants to printks

According to kerneljanitors todo list all printk calls (beginning
a new line) should have an according KERN_* constant.
Those are the missing pieces here for the i2c subsystem.

Signed-off-by: Frank Seidel <frank@f-seidel.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
diff --git a/drivers/i2c/busses/i2c-powermac.c b/drivers/i2c/busses/i2c-powermac.c
index 60ca917..3c9d71f 100644
--- a/drivers/i2c/busses/i2c-powermac.c
+++ b/drivers/i2c/busses/i2c-powermac.c
@@ -191,7 +191,8 @@
 	i2c_set_adapdata(adapter, NULL);
 	/* We aren't that prepared to deal with this... */
 	if (rc)
-		printk("i2c-powermac.c: Failed to remove bus %s !\n",
+		printk(KERN_WARNING
+		       "i2c-powermac.c: Failed to remove bus %s !\n",
 		       adapter->name);
 	platform_set_drvdata(dev, NULL);
 	kfree(adapter);