imx6: engicam: Use bootm instead of bootz

Boot Linux with uImage instead of zImage, so update
bootz with bootm.

Cc: Stefano Babic <sbabic@denx.de>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
11 files changed