Tegra3-Hotplug:

- speed up cpu onlining
- tegra doesn'T like all at once

Signed-off-by: SkipXS <sskkiipp@gmail.com>
Revert "scheduler: default to cfq"

This reverts commit d2fe7d8e9674c4dd7fc9e02ec61d915af5a31e52.
defconfig: 2.7 stable

- back to row
- better cpu onlining

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