gpu: host1x: Expose syncpt and channel functionality

Expose the buffer objects, syncpoint and channel functionality in the
public public header so that drivers can use them.

Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --cc drivers/gpu/host1x/cdma.c
Simple merge

diff --cc drivers/gpu/host1x/channel.h
Simple merge

diff --cc drivers/gpu/host1x/drm/drm.c
Simple merge

diff --cc drivers/gpu/host1x/drm/gem.h
Simple merge

diff --cc drivers/gpu/host1x/drm/gr2d.c
Simple merge

diff --cc drivers/gpu/host1x/drm/hdmi.c
Simple merge

diff --cc drivers/gpu/host1x/host1x_bo.h
Simple merge

diff --cc drivers/gpu/host1x/hw/channel_hw.c
Simple merge

diff --cc drivers/gpu/host1x/hw/debug_hw.c
Simple merge

diff --cc drivers/gpu/host1x/job.c
Simple merge

diff --cc drivers/gpu/host1x/job.h
Simple merge

diff --cc drivers/gpu/host1x/syncpt.c
Simple merge

diff --cc drivers/gpu/host1x/syncpt.h
Simple merge

diff --cc include/linux/host1x.h
Simple merge