Platform: Enable multi-core test on PSoC 64

Set TFM_MULTI_CORE_TEST to ON in PSoC 64 cmake config file to
enable multi-core tests.

Change-Id: Id1e4cc138ffa89ec7daee692d0b9383d77fbc142
Signed-off-by: David Hu <david.hu@arm.com>
1 file changed