Add information related to SPMC tests and fix stale links. Signed-off-by: Gyorgy Szing <Gyorgy.Szing@arm.com> Signed-off-by: Jon Mason <jon.mason@arm.com>
Signed-off-by: Anton Antonov <Anton.Antonov@arm.com> Signed-off-by: Jon Mason <jon.mason@arm.com>