g2: graphic updates

- remove vsync offsets, these are not needed for g2
- reenable "keep 3 buffers ready", this does improve general fps
- reoder a bit, make it pretty

Change-Id: Ia6e461393b77320ce824ae2f3038ec484638bf99
Signed-off-by: bart452 <bart4524@gmail.com>
Merge "g2: graphic updates" into kk44