sched: Improve scalability via 'CPU buddies'

Conflicts:

	kernel/sched/fair.c

Change-Id: I6a4cb250aea73aaef220b8035b162ded85ff7b67
 sched: fix init NOHZ_IDLE flag
set LOAD_FREQ to (4*HZ+61)

Conflicts:

	include/linux/sched.h

Change-Id: I88057e88de1cf9bc006ba63e155c624e5736a165
GPU: OC to 550 Mhtz

Change-Id: I83c4c2d8f411c3b3b644993bf25d8a36436a10a4
Bring some sanity to defconfig and disable some unneeded options
defconfig: disable DVFS touch booster again (got lost in merge)

Change-Id: Ic32ed3a4431051918fb37da390abc0fd5f0802aa
defconfig: switch back to interactive as default gov (gooogle did a good job)

Change-Id: I945de6a285c8f70e3bd1085572e83379c32ecf88