sched: add the max_freq comparing for evaluating the mitigation

trace_sched_get_task_cpu_cycles traces max_freq during the tracing of
OSM cycle considering mitigated such as thermal etc.

Change-Id: If134630e293ceaf8faf2aa0ed7d4cfdfe7b3a4d6
CRs-Fixed: 1108711
Signed-off-by: John zhao <yuankuiz@codeaurora.org>