Revert "Staging: android: lowmemorykiller.c"

This reverts commit 83ce9dfaa87fb35aaa3750f92ec2223b5483a800.
fix the pvs config & not set the huawei lowmemkiller
Revert "mm.h: increase readahead value from 128kb to 1024kb"

This reverts commit 352aa0531b9d38f356c4c6b89184d700c68febcf.
check the base layer
fix
the gpu lowpower consumption config
set the huaweilowmemkiller