MAINTAINERS: change the Atmel audio alsa driver entry

I take over the the maintainship of Atmel alsa drivers from Voice.
Thanks for your work!

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Bo Shen <voice.shen@atmel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/MAINTAINERS b/MAINTAINERS
index ddc5a8c..679b2d0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1751,7 +1751,7 @@
 F:	drivers/tty/serial/atmel_serial.c
 
 ATMEL Audio ALSA driver
-M:	Bo Shen <voice.shen@atmel.com>
+M:	Nicolas Ferre <nicolas.ferre@atmel.com>
 L:	alsa-devel@alsa-project.org (moderated for non-subscribers)
 S:	Supported
 F:	sound/soc/atmel