doc: SCP Firmware Threat Model
Created by: jimqui01
The patch publishes the current threat model for release 2.6 of the SCP firmware. This patch also modifies some of the tools scripts to exclude PDF files.
Change-Id: I52363325c103292585afead5a6d88c355cdb4be6 Signed-off-by: Jim Quigley jim.quigley@arm.com