drm: add support for passing state into the suspend hooks.

fix i915 driver to use state for hibernate save avoidance.

Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --cc drivers/char/drm/drmP.h
Simple merge

diff --cc drivers/char/drm/drm_sysfs.c
Simple merge

diff --cc drivers/char/drm/i915_drv.c
Simple merge