sched: set sched_mc_power_savings to 2

This might helping to let cpu1 stay a longer time in idle
and thus increasing battery life.

Signed-off-by: klozz <xxx.reptar.rawrr.xxx@gmail.com>
msm8226: overclock GPU to 533MHz
CPU overclock

Signed-off-by: klozz <xxx.reptar.rawrr.xxx@gmail.com>