cpufreq: intelliactive: initial coding and introduction!

intelliactive is based on Latest Google Interactive cpufreq governor
from
Google.  The original Interactive provides smooth UI operations but
suffers
slight battery drain due to its aggressive policies.  Intelliactive is
an
improvement built on top of it.

It has the following enhancements added:
1. self-boost capability from input drivers (no need for PowerHAL
assist)
2. two phase scheduling (idle/busy phases to prevent from jumping
directly to
max freq
3. Checks for offline cpus and short circuits some unnecessary checks to
improve code execution paths
4. removed trace calls

Signed-off-by: Paul Reioux <reioux@gmail.com>