Remove code only used by ns_agent_mailbox from SPM

Each multi-core platform contains tfm_hal_multi_core.c, which implements
HAL functions that are only called from ns_agent_mailbox. That code in
turn calls into tfm_multi_core_mem_check.c. Move all that code from SPM
into the ns_agent_mailbox partition itself.

Signed-off-by: Chris Brand <chris.brand@cypress.com>
Change-Id: If44c12572d529c330ef989568c774471df834a9d
6 files changed