engicam: icorem6: Fix config files

Config file names on MAINTAINERS and README in
board/engicam/icorem6 seems to be wrong, hence fixed the same.

Cc: Stefano Babic <sbabic@denx.de>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2 files changed