[$] Capacity awareness for the deadline scheduler

The Linux deadline scheduler supports realtime systems whereapplications need tobe sure of getting their work done within a specific period of time. Itallocates CPU time to deadline tasks in such a way as to ensure that eachtask's specific timing constraints are met.However, the currentimplementation does not work well on asymmetric CPU configurations like Arm'sbig.LITTLE. Dietmar Eggemann recently posteda patch set to address this problem by adding the notion of CPUcapacity to the deadline scheduler.