Add support for mvebu bubt command for flash image
load, check and burn on boot device.
Signed-off-by: Konstantin Porotchkin
Reviewed-by: Stefan Roese
Cc: Stefan Roese
Cc: Nadav Haklai
Cc: Neta Zur Hershkovits
Cc: Omri Itach
Cc: Igal Liberman
Cc: Haim Boot
Cc: Hanna Hawa
Signed-off-by: Stefan Roese