spd: trusty: use FFA specific macros from ffa_svc am: e4530cd3cf

Original change: https://android-review.googlesource.com/c/trusty/external/trusted-firmware-a/+/2731242

Change-Id: Ia232cb79913a28eaed74f7e2ebec7b54fcc783b8
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>