ACPI and power management fixes for 3.9-rc5

- Fix for a recent cpufreq regression related to acpi-cpufreq and
  suspend/resume from Viresh Kumar.

- cpufreq stats reference counting fix from Viresh Kumar.

- intel_pstate driver fixes from Dirk Brandewie and
  Konrad Rzeszutek Wilk.

- New ACPI suspend blacklist entry for Sony Vaio VGN-FW21M from
  Fabio Valentini.

- ACPI Platform Error Interface (APEI) fix from Chen Gong.

- PCI root bridge hotplug locking fix from Yinghai Lu.

/
Merge branch 'acpi-fixes' into fixes

* acpi-fixes:
  PCI / ACPI: hold acpi_scan_lock during root bus hotplug
  ACPI / APEI: fix error status check condition for CPER
  ACPI / PM: fix suspend and resume on Sony Vaio VGN-FW21M