- perf: Do not export power_frequency, but power_start event
      (bnc#665153).
    - cpuidle/x86/perf: fix power:cpu_idle double end events and
      throw cpu_idle events from the cpuidle layer (bnc#665153).
    - perf: Clean up power events by introducing new, more generic
      ones (bnc#665153).
    - cpuidle: Rename X86 specific idle poll state from C0 to POLL
      (bnc#665153).
    - perf timechart: Adjust perf timechart to the new power events
      (bnc#665153).
    - Fix display of idle boxes (none).
    - Fix huge and wronge C-state drawings due to uninitialized
      start/end timestamps (none).
    - Update config files.
    - doc/config-options.changes:
      CONFIG_EVENT_POWER_TRACING_DEPRECATED=y