Added SW_THRESHOLD policy support for over power protection. JIRA DNVGPU-70 Change-Id: I021f47f234d42be15ddbfd02a22e9299fd486636 Signed-off-by: Lakshmanan M <lm@nvidia.com> Reviewed-on: http://git-master/r/1233051 (cherry picked from commit 301e0ac123a7a65a7f83e5615f3a89e55253a0bd) Reviewed-on: http://git-master/r/1241958 Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> GVS: Gerrit_Virtual_Submit