Update SurfaceFlinger FIFO configuration.

- move SurfaceFlinger main thread to prio 2
- drop EventThread from FIFO but not SFEventThread, which is still FIFO
prio 1
- make DispSyncThread FIFO, prio 1

bug 30481949

Change-Id: Ifedccfbf3cf144ffad030109849a924dddae8d09
4 files changed