This commit adds the initramfs into the FIT recovery
image. If the RAM disk image is included in the FIT
image we need to create a initramfs file that doesn't
include the u-boot header, because the FIT descriptor
contains all the necessary information to use the
initramfs file.
https://onedigi.atlassian.net/browse/DEL-9168
Signed-off-by: Mike Engel <Mike.Engel@digi.com>