Draft: [KERNEL] add fitImage support
Add support for building the kernel+fdt fitImage.
The fitImage replaces the Clea OS boot partition(s), and it doesn't include
- initramfs
- boot script because these files reside in the sys_boot partition.
Because the initramfs is external to the FIT image, FIT components (kernel, fdt) are extracted with imxtract, and then booti/bootz is used to boot the kernel instead of bootm.
Only tested on D18.
Signed-off-by: Alessandro Pecugi alessandro.pecugi@seco.com