[oe] deploy multiple kernel image types

[Sledz, Steffen]

> > Is it possible to deploy multiple kernel image types (e.g. 
> > zImage and uImage) at the same time? As i understand it right 
> > KERNEL_IMAGETYPE allows just one argument.
> 
> At the moment: no, but I would be interested in such 
> functionality for boards using kexecboot initramfs inside
> a uImage that will load a zImage from disk.

That's exactly the scenario i need it for. ;-)