Agni V7.0 Stable Changelogs

Rebased from scratch on CAF LA.UM.8.9.r1-10900 with 4.14.212
Compiled with Snapdragon LLVM clang 10.0.9
block: Make CFQ default to IOPS mode on SSDs & tweak values
block/aio: Don't plug the I/O queue in do_io_submit()
fs/namespace: Default to NOATIME and NODIRATIME for FS performance improvement.
net: update wireguard v1.0.20201221
tcp_output: set initial TCP window size to 64K (speed improvement)
fs: Improve eventpoll logging to stop indicting timerfd
Revert previous selinux changes