[security] Upgrade kernel version to 3.16.57-2#68

Merged

lguohan merged 3 commits intosonic-net:201803from

zhenggen-xu:201803-k-upgrade

Oct 4, 2018

Commits on Oct 3, 2018

Update Makefile to take 3.16.57-2 kernel
zhenggen-xu
committed

Commits on Oct 4, 2018