MAINTAINERS: add myself as atmel-mci maintainer (sd/mmc interface)

Add MAINTAINERS entry for atmel-mci driver.
This driver was maintained by its author: Haavard Skinnemoen. I take the
maintainance of it.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: Pierre Ossman <pierre@ossman.eu>

MAINTAINERS

@@ -1010,6 +1010,13 @@ W:	http://www.at91.com/
 S:	Maintained
 F:	drivers/mmc/host/at91_mci.c
 
+ATMEL AT91 / AT32 MCI DRIVER
+P:	Nicolas Ferre
+M:	nicolas.ferre@atmel.com
+S:	Maintained
+F:	drivers/mmc/host/atmel-mci.c
+F:	drivers/mmc/host/atmel-mci-regs.h
+
 ATMEL AT91 / AT32 SERIAL DRIVER
 P:	Haavard Skinnemoen
 M:	hskinnemoen@atmel.com