Platform: Added a Non-Volatile counters service

This patch introduces a new platform service exposing
the non-volatile counters. Secure partitions can use
this secure API to access the initialisation,
increment and read operations on the nv counters,
by setting "TFM_SP_PLATFORM_NV_COUNTER" as a dependency.

Change-Id: Ia564e24417dfd9bb95cc61634dbbea17caa5974c
Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
17 files changed