In preparation of the driver test entry points to be
provided by a test driver library, move their prototypes
to tests directory.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
Change signature test driver default forced return
value from PSA_ERROR_NOT_SUPPORTED to PSA_SUCCESS to
be able to run the PSA unit tests with hash signature
and signature verification being handled by the
transparent test driver.
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
