In-kernel mpdecision tweaks

The original version of in-kernel mpdecision was tuned to lg mako, which has 4 cpu cores and no keyboard. We have only two cores, and do have a keyboard, so the following changes have been made;

1) Boost frequency increased from 918 MHz to 1134 MHz.
2) On a boost event, bring the second CPU core online.
3) On a keyboard event, do not initiate a boost event.