[PATCH AUTOSEL for 4.15 166/189] cpufreq: intel_pstate: Enable HWP during system resume on CPU0

From: Chen Yu [ Upstream commit 70f6bf2a3b7e40c3f802b0ea837762a8bc6c1430 ] 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

[PATCH AUTOSEL for 4.15 166/189] cpufreq: intel_pstate: Enable HWP during system resume on CPU0

From: Chen Yu [ Upstream commit 70f6bf2a3b7e40c3f802b0ea837762a8bc6c1430 ] 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