Platform: Add diphda platform

Platform support for the Secure Enclave (SE) of diphda added. SE starts
to execute the BL1 component at reset, which ram-loads BL2. Then BL2
ram-loads SE's TF-M image and the images of the Host processor. After
the initialization of TF-M is finished the Host processor is released
from rest.

Change-Id: Ief73f59365f5adb2f185e4e5675518cfae7efa71
Signed-off-by: Mark Horvath <mark.horvath@arm.com>
Signed-off-by: Satish Kumar <satish.kumar01@arm.com>
44 files changed