Add optee os arch and product
Created by: vingu-linaro
This P-R integrates the changes that we have made in SCP firmware in order to make it run as a pseudo Trusted Application in OP-TEE env.
SCP-Firmware is integrated as a sub-module of op_tee-os. this PR has been tested with : https://github.com/vingu-linaro/optee_os/tree/scmi-over-optee.
This has been tested on FVP arm64 and stm32.