Core: Move SVC header into 'secure_fw/include'

The SVC header 'tfm_svc.h' is an interface between secure-services and
the core, not a private header of core. Move it out of 'core/include'
and put it under 'secure_fw/include/core' with a new name
'tfm_core_svc.h' to indicate it is a core interface.

Change-Id: I98a48d417be9e7a590d263b20a9c8b0a5e954f3e
Signed-off-by: Ken Liu <ken.liu@arm.com>
15 files changed