Changelog:

- Merged latest CAF changes and 4.14.170.

- Memory allocation security improvements from GrapheneOS.

- Updated and improved simple_lmk, it will hold up much better under heavy RAM usage.

- Fixed powerhal on some ROMs.

- A few tcp improvements.

- Corrected devfreq_boost frequencies.

- Task scheduling improvements by RenderBroken and from mainline.

- Some bugfixes to various drivers from msm-4.19.