doc: Add security.md file.
Created by: katvin01
A security.md file has been added to add details of the SCP-firmware security process.
Signed-off-by: Katherine Vincent katherine.vincent@arm.com Change-Id: Ia7c4d9e50e85ebc6844e255730a6e6a9d0721aca
Created by: katvin01
A security.md file has been added to add details of the SCP-firmware security process.
Signed-off-by: Katherine Vincent katherine.vincent@arm.com Change-Id: Ia7c4d9e50e85ebc6844e255730a6e6a9d0721aca