Add Marvell "doimage" utility support.
The "doimage" utility allows to create flash images compatible
with Marvell BootROM image format. Additionally this tool
allows the flash image parsing and verification.
Change-Id: Ie8d7ccd0cc2978684e7eecb695f375395fc749ee
Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>