ASoC: Add Dimitris Papastamos to Wolfson maintainers

Add Dimitris Papastamos as a contact for Wolfson device drivers.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NDimitris Papastamos <dp@opensource.wolfsonmicro.com>

MAINTAINERS

@@ -6411,6 +6411,7 @@ F:	include/linux/wm97xx.h
 WOLFSON MICROELECTRONICS DRIVERS
 M:	Mark Brown <broonie@opensource.wolfsonmicro.com>
 M:	Ian Lartey <ian@opensource.wolfsonmicro.com>
+M:	Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
 T:	git git://opensource.wolfsonmicro.com/linux-2.6-audioplus
 W:	http://opensource.wolfsonmicro.com/node/8
 S:	Supported