Staging: android: lowmemorykiller: fix up remaining checkpatch warnings

This cleans up the last of the checkpatch warnings in the android
lowmemorykiller driver.


Cc: San Mehat <san@android.com>
Cc: Arve Hjønnevåg <arve@android.com>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>