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: engage deferred timer by default

Signed-off-by: Paul Reioux <reioux@gmail.com>
cpufreq/intelliactive: unused junk

some unused code.
cpufreq/intelliactive: support for note2 touchscreen, buttons and touchkeys

- initial commit of intelliactive did not support the name sec_touchscreen,
which is used by the note2 touchscreen driver.

- also added gpio-keys to boost on volume, power, and home button presses.

- also added sec_touchkey to boost on touchkey presses.