SWPL-59636

Problem:
cma shrinker is not standard implement, which may cause
app being unexpected killed

Solution:
use lmkd to kill app.
disable cma shrinker

Signed-off-by: Shuide Chen <shuide.chen@amlogic.com>
Change-Id: I9e510f837047fdb2c8617efb3ba403c69d8f1b9c