Dualcpu: Platform specific communication option

By setting the TFM_PLAT_SPECIFIC_MULTI_CORE_COMM cmake flag platform
specific implementation can be used to communicate between the Secure
and Non-secure cpu.

Change-Id: Ia966fa7150a709b75b6dfd1bce0d41135f287398
Signed-off-by: Mark Horvath <mark.horvath@arm.com>
6 files changed