Merge branches 'arm-asymmetric-support-v3', 'cpuidle-next-v4', 'per-cpu-thread-hotplug-v2', 'task-placement-v1' and 'config-fragments' into big-LITTLE-MP-v3

Based on v3.5-rc6

$ git checkout -b big-LITTLE-MP-v3 v3.5-rc6
$ git merge arm-asymmetric-support-v3 cpuidle-next-v4 per-cpu-thread-hotplug-v2 per-task-load-average-v2 task-placement-v1 config-fragments