* Move Digi code out of the upstream files to minimize conflicts in
version migrations.
* Remove all the TEE client copied code and use the libteeclient library.
* Some fixes in the Optee-based environment encryption
* Some simplifications in CAAM-based environment encryption.
https://onedigi.atlassian.net/browse/DUB-1079
Signed-off-by: Javier Viguera <javier.viguera@digi.com>
Javier Viguera