cpufreq: intel_pstate: Enable HWP during system resume on CPU0
When maxcpus=1 is in the kernel command line, the BP is responsible for re-enabling the HWP - because currently only the APs invoke intel_pstate_hwp_enable() during their online process - which might put the system into unstable state after resume. Fix this by enabling the HWP explicitly on BP during resume. Reported-by: NDoug Smythies <dsmythies@telus.net> Suggested-by: NSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: NYu Chen <yu.c.chen@intel.com> [ rjw: Subject/changelog, minor modifications ] Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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