staging: android: update sync to upstream

Signed-off-by: Blechd0se <alex.christ@hotmail.de>
ion: Switch ion to use dma-buf

Ion now uses dma-buf file descriptors to share
buffers with userspace.  Ion becomes a dma-buf
exporter and any driver that can import dma-bufs
can now import ion file descriptors.

Change-Id: Ia04d6d72fb301dc088eb8db6576822e9260ff332
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
Signed-off-by: Blechd0se <alex.christ@hotmail.de>

Conflicts:
	drivers/gpu/ion/ion.c
	include/linux/ion.h
defconfig: disable sync driver

Signed-off-by: Blechd0se <alex.christ@hotmail.de>