armv8: Support loading 32-bit OS which is not in the form of FIT

As only FIT image is supported now, this patch is to support loading
32-bit uImage, dtb and rootfs separately.

Signed-off-by: Alison Wang <alison.wang@nxp.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
1 file changed