MAINTAINERS: i2c: Add third maintainer

Add me as a third maintainer to help out in the i2c subsystem.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Ben Dooks <ben-linux@fluff.org>

MAINTAINERS

@@ -3193,6 +3193,7 @@ F:	drivers/i2c/busses/i2c-stub.c
 I2C SUBSYSTEM
 M:	"Jean Delvare (PC drivers, core)" <khali@linux-fr.org>
 M:	"Ben Dooks (embedded platforms)" <ben-linux@fluff.org>
+M:	"Wolfram Sang (embedded platforms)" <w.sang@pengutronix.de>
 L:	linux-i2c@vger.kernel.org
 W:	http://i2c.wiki.kernel.org/
 T:	quilt kernel.org/pub/linux/kernel/people/jdelvare/linux-2.6/jdelvare-i2c/