linux-wandboard

drm: update DRM sysfs support

Make DRM devices use real Linux devices instead of class devices, which are
going away.  While we're at it, clean up some of the interfaces to take
struct drm_device * or struct device * and use the global drm_class where
needed instead of passing it around.

Signed-off-by: Dave Airlie <airlied@linux.ie>