Merge branch 'pm-devfreq'

* pm-devfreq:
  PM / devfreq: imx8m-ddrc: Remove unneeded of_match_ptr()
  PM / devfreq: imx-bus: Remove unneeded of_match_ptr()
  PM / devfreq: imx8m-ddrc: Remove imx8m_ddrc_get_dev_status
  PM / devfreq: Remove the invalid description for get_target_freq
  PM / devfreq: Check get_dev_status in devfreq_update_stats
  PM / devfreq: Fix the wrong set_freq path for userspace governor in Kconfig
  dt-bindings: devfreq: rk3399_dmc: Remove references of unexistant defines
  dt-bindings: devfreq: rk3399_dmc: Add rockchip,pmu phandle.
  PM / devfreq: rk3399_dmc: Simplify with dev_err_probe()
  PM / devfreq: Use more accurate returned new_freq as resume_freq
  PM / devfreq: Unlock mutex and free devfreq struct in error path
  PM / devfreq: Register devfreq as a cooling device on demand