sched: set mc_power_savings=2
this feature packs tasks together and try to bind them to cpu0, which in theory will let cpu1 idle longer, thus improving battery life.

Info: http://elinux.org/images/1/1d/Comparing_Power_Saving_Techniques_For_Multicore_ARM_Platforms.pdf

Signed-off-by: Jean Francis Dominique S. Mabalot <jfdsmabalot@redhat.com>
FS: import F2FS

Signed-off-by: Paul Reioux <reioux@gmail.com>
defconfig: F2FS Support
Signed-off-by: Jean Francis Dominique S. Mabalot <jfdsmabalot@redhat.com>
Merge upstream changes

Signed-off-by: Jean Francis Dominique S. Mabalot <jfdsmabalot@redhat.com>