uboot-imx

rockchip: board: lion-rk3368: update .its file

For the RK3368-uQ7, we can now update the .its file to mark the
Trusted Firmware as out 'firmware' bootable and annotate both ATF and
U-Boot with an OS-type.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>