i2c: Quilt tree has moved

My i2c quilt tree will now be hosted on kernel.org, because I can
conveniently use rsync there.

Also list the new i2c wiki.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

MAINTAINERS

@@ -2102,7 +2102,8 @@ M:	khali@linux-fr.org
 P:	Ben Dooks (embedded platforms)
 M:	ben-linux@fluff.org
 L:	linux-i2c@vger.kernel.org
-T:	quilt http://khali.linux-fr.org/devel/linux-2.6/jdelvare-i2c/
+W:	http://i2c.wiki.kernel.org/
+T:	quilt kernel.org/pub/linux/kernel/people/jdelvare/linux-2.6/jdelvare-i2c/
 S:	Maintained
 
 I2C-TINY-USB DRIVER