[U-Boot] [U-Boot,v3,06/11] image: add os type for OP-TEE

[Philipp Tomsich]

> OP-TEE is an open source trust OS maintained here:
> https://github.com/OP-TEE/optee_os
> 
> Signed-off-by: Kever Yang <kever.yang at rock-chips.com>
> Acked-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>
> ---
> 
> Changes in v3: None
> Changes in v2:
> - Add new image type like ATF
> 
>  common/image.c  | 1 +
>  include/image.h | 1 +
>  2 files changed, 2 insertions(+)
> 

Reviewed-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>