Merge back earlier 'pm-domains' material for v4.4.
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>
Fri, 16 Oct 2015 20:12:57 +0000 (22:12 +0200)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Fri, 16 Oct 2015 20:12:57 +0000 (22:12 +0200)

Trivial merge