cpufreq: interactive: Pass target_load to scheduler

Scheduler needs to understand governor's target_load in order to make
correct decisions when scheduling tasks.

Change-Id: Ia440986de813632def0352e34425fa69da3b2923
Signed-off-by: Junjie Wu <junjiew@codeaurora.org>
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>