Add git recipe versions that track the latest git versions of u-boot and
the various OP-TEE recipes. This, in combination with the previously
existing trusted firmware a and m recipes, allows for using the latest
code in platform development and testing (as part of CI).
For CI usage, a KAS yml file has been created to allow for those recipes
to be used, and an entry for fvp-base has been added to the gitlab CI
yml file.
NOTE: the wildcard for corstone1000 u-boot PREFERRED_VERSION was causing
it to pick-up the newest version (and failing to apply the patches).
The wildcard is unnecessary, since it is using a layer supplied package.
So, remove it and everyone is happy.
Signed-off-by: Jon Mason <jon.mason@arm.com>