Merge branches 'pm-domains', 'pm-docs' and 'pm-devfreq'

* pm-domains:
  PM / domains: Fix 'may be used uninitialized' build warning

* pm-docs:
  PM / docs: Drop confusing kernel-doc references from infrastructure.rst

* pm-devfreq:
  PM / devfreq: exynos-bus: Fix the wrong return value
  PM / devfreq: Fix the bug of devfreq_add_device when governor is NULL
  MAINTAINERS: Add myself as reviewer for DEVFREQ subsystem support