cpuidle: ladder: Add per CPU PM QoS resume latency support
Individual CPUs may have special requirements to not enter deep idle states. For example, a CPU running real time applications would not want to enter deep idle states to avoid latency impacts. At the same time other CPUs that do not have such a requirement could allow deep idle states to save power. This was already implemented in the menu governor. Implementing similar changes in the ladder governor which gets selected when CONFIG_NO_HZ and CONFIG_NO_HZ_IDLE are not set. Refer following commits for the menu governor changes. Signed-off-by: Ramesh Thomas <ramesh.thomas@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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