Add binman node to device tree to generate the FIT image for u-boot
(u-boot.itb) and OS kernel (kernel.itb).
u-boot.itb contains arm trusted firmware (ATF), u-boot proper and
u-boot device tree for ATF u-boot flow.
kernel.itb contains Linux Image and Linux device tree.
Signed-off-by: Siew Chin Lim <elly.siew.chin.lim@intel.com>
