Power management fixes for v4.15-rc5

 - Fix an issue in the PCI handling of the "thaw" transition during
   hibernation (after creating an image), introduced by a bug fix
   from the 4.13 cycle and exposed by recent changes in the IRQ
   subsystem, that caused pci_restore_state() to be called for
   devices in low-power states in some cases which is incorrect
   and breaks MSI management on some systems (Rafael Wysocki).

 - Fix a recent regression in the imx6q cpufreq driver that broke
   speed grading on i.MX6 QuadPlus by omitting checks causing
   invalid operating performance points (OPPs) to be disabled on
   that SoC as appropriate (Lucas Stach).

 - Fix a regression introduced during the 4.14 cycle in the ondemand
   and conservative cpufreq governors that causes the sampling
   interval used by them to be shorter than the tick period in some
   cases which leads to incorrect decisions (Rafael Wysocki).
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2
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=fTB6
-----END PGP SIGNATURE-----