configs: imx6dl_mamoj: Enable fastboot and ums

Enable fastboot and ums for host to interact eMMC on
Mamoj board.

Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Simone CIANNI <simone.cianni@bticino.it>
Signed-off-by: Raffaele RECALCATI <raffaele.recalcati@bticino.it>