Add intellimm governor, tuned for ville

Signed-off-by: Javelin <javelinanddart@gmail.com>

Conflicts:
	arch/arm/configs/m7_att_defconfig
	arch/arm/configs/rain_defconfig
Tune intellimm even more for powersave and freqency inaccuracies

Signed-off-by: Javelin <javelinanddart@gmail.com>
revert part of last commit

Signed-off-by: Javelin <javelinanddart@gmail.com>
Remove rain defconfig

Signed-off-by: Javelin <javelinanddart@gmail.com>
Update defconfig to choose intellimm

Signed-off-by: Javelin <javelinanddart@gmail.com>