spd: trusty: use FFA specific macros from ffa_svc

This modifies FFA memory sharing ABIs in Trusty SPD to use FFA
function IDs from ffa_svc.h. Removes FFA function IDs definition from
Trusty SPD.

Signed-off-by: Arunachalam Ganapathy <arunachalam.ganapathy@arm.com>
Change-Id: I9d46f004286867e6b2a685aca2841cdb29b25053
2 files changed