p970: remove F2FS

tests were not that satisfying, lets remove it again

Change-Id: I990dabbd2ce6c355a7e5e738f2f51ccf79871cf0
hwc: disable YUV overlays

Change-Id: I4997b7c2cb3083baeb2dd4f11577c45dd57f7d96
p970: use fence sync

Change-Id: I76521bc41ccb9f2811177f58536b7ce4f358ee96
enable bluetooth tethering

Change-Id: Ifdb0894373fcbb32648860643a1ad03cb058f589
Merge pull request #1 from NamelessRom/android-4.4

Merge latest commits from main fork