uboot-imx

igep003x: MAINTAINER: Remove myself as maintainer and add Javier

I can't continue maintaining the board because I don't have access to the
hardware anymore, so remove myself from the entry and add Javier who has
volunteered to help and maintain the board.

Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Javier Martínez Canillas <javier@dowhile0.org>