Tegra3-Hotplug:

- adjust thresholds

Signed-off-by: SkipXS <sskkiipp@gmail.com>
Tegra3-Hotplug:

- remove speed_factor
- adjust thresholds because according to nvidia
  http://www.nvidia.com/content/PDF/tegra_white_papers/tegra-whitepaper-0911b.pdf
  lower cpu-frequency saves more power than less cpus, so switch
  cpu online if there are enough threads to be actually used without degrading
  performance due to migrating threads

Signed-off-by: SkipXS <sskkiipp@gmail.com>
defconfig: 2.4 stable

- finalized hotplug

Signed-off-by: SkipXS <sskkiipp@gmail.com>