mach-msm: Use ION_CP_MM_HEAP_ID instead of ION_CAMERA_HEAP_ID

Since some msm7x30 devices can't use ION_CAMERA_HEAP_ID on rom side,
we have to change the ion heap used for video encoding/decoding from
ION_CAMERA_HEAP_ID to ION_CP_MM_HEAP_ID.

On rom side, the following commit must be applied on media-caf side:
http://review.cyanogenmod.org/#/c/62863/
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>