ACPI and power management updates for 3.18-rc2

 - Fix for a recent PCI power management change that overlooked
   the fact that some IRQ chips might not be able to configure
   PCIe PME for system wakeup from Lucas Stach.

 - Fix for a bug introduced in 3.17 where acpi_device_wakeup()
   is called with a wrong ordering of arguments from Zhang Rui.

 - A bunch of intel_pstate driver fixes (all -stable candidates)
   from Dirk Brandewie, Gabriele Mazzotta and Pali Rohár.

 - Fixes for a rather long-standing problem with the OOM killer
   and the freezer that frozen processes killed by the OOM do
   not actually release any memory until they are thawed, so
   OOM-killing them is rather pointless, with a couple of
   cleanups on top (Michal Hocko, Cong Wang, Rafael J Wysocki).

 - ACPICA update to upstream release 20140926, inlcuding mostly
   cleanups reducing differences between the upstream ACPICA and
   the kernel code, tools changes (acpidump, acpiexec) and
   support for the _DDN object (Bob Moore, Lv Zheng).

 - New PM QoS class for memory bandwidth from Tomeu Vizoso.

 - Default 32-bit DMA mask for platform devices enumerated by ACPI
   (this change is mostly needed for some drivers development in
   progress targeted at 3.19) from Heikki Krogerus.

 - ACPI EC driver cleanups, mostly related to debugging, from
   Lv Zheng.

 - cpufreq-dt driver updates from Thomas Petazzoni.

 - powernv cpuidle driver update from Preeti U Murthy.

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