To prepare for the move of check_test_cases.py to the version-independent
framework repository, make the file in mbedtls-3.6 identical to the file
in development.
In development, check_test_cases.py now looks for tests under tf-psa-crypto.
This is useless but harmless in mbedtls-3.6.
Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>