Configures Juno with OP-TEE.
Reviewed-by: NPascal Brand <pascal.brand@linaro.org>
Signed-off-by: NJens Wiklander <jens.wiklander@linaro.org>
[jf: rebase onto v5.9-rc7]
Signed-off-by: NJerome Forissier <jerome@forissier.org>