cpufreq: add smartass-v2 governor

Change-Id: I03af671ad922cce93739e1fb2584511803aa3055
cpufreq: add lagfree governor

Change-Id: Ia8192529924155d1be7430c19b1d4ee583594200
cpufreq: add default options for smartassV2 and lagfree

Change-Id: Ifa1264762f3ccfc39a5d02e88b57cfeeb31c5358
smartass2: tune for olympus

Change-Id: I62404db204a03be1df7632f74cb619360053f8fa
defconfig: set smartass2 as default

Conservative will not be used when idle, smartass already manage the
frequencies on sleep state.

Change-Id: I8aad949551f1f1c032b5fe19f72bd81a84953027
smartass2: manage frequencies at higher cpu load

Probably this will need to tweaked more, so we can achieve performance
and battery save.

Change-Id: I8ad4e0822f447e960317a6153ab4be3f9f9683cc
smartass2: use lower ideal and wakeup frequencies, calculate ramp step

Change-Id: I347b8c56d8d46e0a9785d661b4c4542aa3ae4df6
defconfig: use ROW as default I/O scheduler

Change-Id: I1a1525f0a38ebfb667d9a7e129d52627952c9b62
cpufreq: add lagfree to the list of default governors

Forgot this in 04304303824f5ccd1a055dfef22e5b0d922e4d7c.

Change-Id: If10bda725060e58eb35907bd32a00fdf118ea73b