PS: Do not test PS_ROLLBACK_PROTECTION test suite if not built

If the PS_ROLLBACK_PROTECTION feature is not enabled, then do
not build and run the associated test suite.

Signed-off-by: Antonio de Angelis <antonio.deangelis@arm.com>
Change-Id: I29fb2bddf5e54be2f62d973236085bb77d060d54
2 files changed