This reverts commit 939ce9d0d543530b84eef05405ee21ee89eb8246.
Build mbedtls_test library of objects to link
with TLS and x509 test suites and programs
with mbedtls framework not TF-PSA-Crypto
one (when it will be there).
Signed-off-by: Ronald Cron <ronald.cron@arm.com>