Merge changes Ifbdd3ecc,Ieca413c1,Id2ba91cc,Ib83207b9 into msm-3.10

* changes:
  cpufreq: cpu-boost: Handle wakeup hints received for foreground tasks
  sched: Call the notify_on_migrate notifier chain for wakeups as well
  cpufreq: cpu-boost: Introduce scheduler assisted load based syncs
  sched: window-based load stats for tasks