lowmemorykiller: Reset to android-common driver

lowmemorykiller.c
6cfb58f lowmemorykiller: trace kill events.
3b60bc5f lowmemorykiller: make default lowmemorykiller debug message useful
74396c47 staging: android: lowmemorykiller: Add config option to support oom_adj values
67418b78 staging: android: lowmemorykiller: Fix task_struct leak

trace/lowmemorykiller.h
6cfb58f lowmemorykiller: trace kill events.

Change-Id: I708fc48aad97a1e28ad16ae95f393cf2cdac177f
Signed-off-by: Ajay Dudani <adudani@google.com>