More power management updates for 5.2-rc1

 - Fix recent regression causing kernels built with CONFIG_PM
   unset to crash on systems that support the Performance and
   Energy Bias Hint (EPB) by avoiding to compile the EPB-related
   code depending on CONFIG_PM when it is unset (Rafael Wysocki).

 - Clean up the transition notifier invocation code in the cpufreq
   core and change some users of cpufreq transition notifiers
   accordingly (Viresh Kumar).

 - Change MAINTAINERS to cover the schedutil governor as part of
   cpufreq (Viresh Kumar).

 - Simplify cpufreq_init_policy() to avoid redundant computations
   (Yue Hu).

 - Add explanatory comment to the cpufreq core (Rafael Wysocki).

 - Introduce a new flag, GENPD_FLAG_RPM_ALWAYS_ON, to the generic
   power domains (genpd) framework along with the first user of it
   (Leonard Crestez).
Merge branches 'pm-cpufreq' and 'pm-domains'

* pm-cpufreq:
  cpufreq: Update MAINTAINERS to include schedutil governor
  cpufreq: Don't find governor for setpolicy drivers in cpufreq_init_policy()
  cpufreq: Explain the kobject_put() in cpufreq_policy_alloc()
  cpufreq: Call transition notifier only once for each policy

* pm-domains:
  soc: imx: gpc: Use GENPD_FLAG_RPM_ALWAYS_ON for ERR009619
  PM / Domains: Add GENPD_FLAG_RPM_ALWAYS_ON flag