Merge tag 'pull_req_20150129' of git://git.kernel.org/pub/scm/linux/kernel/git/mzx...

Merge tag 'pull_req_20150129' of git://git.kernel.org/pub/scm/linux/kernel/git/mzx/devfreq into pm-devfreq

Pull devfreq changes for v3.20 from MyungJoo Ham.

* tag 'pull_req_20150129' of git://git.kernel.org/pub/scm/linux/kernel/git/mzx/devfreq:
  PM / devfreq: event: Add documentation for exynos-ppmu devfreq-event driver
  devfreq: Fix build break of devfreq-event class
  PM / devfreq: event: Add devfreq_event class
  PM / devfreq: tegra: add devfreq driver for Tegra Activity Monitor