COMPMID-639 - Add PPMAccessor and TopNPredictionsAccessor in graph_utils

Change-Id: I40c3e2dfcde10c65ed9c86f9283a53f9e679d4fa
Reviewed-on: http://mpd-gerrit.cambridge.arm.com/92437
Reviewed-by: Anthony Barbier <anthony.barbier@arm.com>
Tested-by: Kaizen <jeremy.johnson+kaizengerrit@arm.com>
5 files changed