Created by: davidcunado-arm
With this patch, the SCP-firmware will accept contributions to the project from non-Arm contributors. Contributions must be made under Developer Certificate of Origin (DCO).
This patch updates the contributing guidelines to describe how contributions can be made, and additionally adds a copy of the DCO terms.
Change-Id: I1cb23b1785c4fb074ae0c344556319a2d7a0254e Signed-off-by: David Cunado email@example.com