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: NNicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: NHaavard Skinnemoen <haavard.skinnemoen@atmel.com>
Signed-off-by: NPierre Ossman <pierre@ossman.eu>