dynamic: change ignore_nice_load behaviour

In suspend nice load is always ignored, in standby it's ignored if
ignore_nice_load >= 1 and in active if ignore_nice_load == 2

Actually ignoring nice load in active mode can hurt interactivity
seriously:
Consider a situation where foreground application and a niced
process both load the cpu and niced process gets only 15% of cpu time.
If we ignored nice load, than governor would see load of only 85% - if
up_threshold > 85, then it would not decide to raise cpu frequency
although foregroud up needs it!

Therefore ignore_nice_load should be considered hard powersaving
parameter (for profiles below 'balanced')
dynamic: add debug statements