SPM: Enable NSPE managing client_id

TFM_NS_MANAGE_NSID build flag is added to enable NSPE
managing client_id both in library model and IPC model.

Signed-off-by: Sherry Zhnag <sherry.zhang2@arm.com>
Change-Id: I4e8d1bf8967de442787f4989d2bb8e371f78bef6
11 files changed