sched: don't active migrate tasks to CPUs in the same cluster

energy_aware_wake_cpu() can choose a CPU other than previous CPU for
reasons.  When it's used at energy_aware_wake_cpu(), we have to avoid
unwanted active migration within the same cluster and allow only
inter cluster upmigration.

Check with CPU's capacity and allow inter cluster upmigration only.

Change-Id: I6a1378ed39601078590e300d065f33fe6a81b178
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>