Starting with NXP release "lf-6.1.55-2.2.0" the IMX optee fork (based on
version 4.0.0) does not support SOC revision A0. This commit recovers
support to build a bootloader for A0, extending the optee patch for
ccimx93 to support A0 with a build time option, and then extending the
optee-os and imx-boot recipes to build two optee binaries and using them
to generate bootloaders for both SOC revisions.
Signed-off-by: Javier Viguera <javier.viguera@digi.com>