ANDROID: sched: Add env->cpus to android_rvh_sched_nohz_balancer_kick

android_rvh_sched_nohz_balancer_kick hook allows vendor modules to
select the busiest CPU in a group during load balance. When the
load balancer could not pull tasks from this busiest CPU due to
affinity restriction, the CPU is cleared from env->cpu. This must
be passed to the vendor module, otherwise we keep selecting the
exempted CPU as the busiest CPU.

Bug: 174338902
Change-Id: Iedaa389a51849da4c3e094d731fe5e39cd909d81
Signed-off-by: Pavankumar Kondeti <pkondeti@codeaurora.org>