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Consolidate the CS1K kas files into a common file, and respect the
platform policy by setting the DISTRO to poky-tiny. Also add the
CS1K-specific recipes psa-arch-tests and ffa-debugfs-mod to the build.
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Jon Mason <jon.mason@arm.com>