logger: Add an enable toggle for entry storage
ksm: Provide support to use deferred timers for scanner thread

KSM thread to scan pages is getting schedule on definite timeout.
That wakes up CPU from idle state and hence may affect the power
consumption. Provide an optional support to use deferred timer
which suites low-power use-cases.

To enable deferred timers,
$ echo 1 > /sys/kernel/mm/ksm/deferred_timer

Change-Id: I07fe199f97fe1f72f9a9e1b0b757a3ac533719e8
Signed-off-by: Chintan Pandya <cpandya@codeaurora.org>
mm/ksm: enable deferred timer

Change-Id: Ibd9a169721677a26150ff510de9e8e909a1ceab5
cpufreq: interactive: this should be using refactored boost

Change-Id: I98f641745acc49a6b4f74741445f903738e5d7d8
defconfig: disable userspace governor

who uses this anyway?

Change-Id: I6df9a1faec0b3930ebf7a3f93e3ae7444d7c680c