cpufreq: ondemand: Add missing bits

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>
cpufreq: intellidemand: Dust off long-disabled governor

* Remove input-boost since it conflicts with cpu-boost.
* Reformat entire code.
* Add policy checks to prevent null dereference.

Signed-off-by: Pranav Vashi <neobuddy89@gmail.com>