drm/i915: add MIPI DSI output type and subtypes

#define INTEL_OUTPUT_HDMI 6

#define INTEL_OUTPUT_DISPLAYPORT 7

#define INTEL_OUTPUT_EDP 8

#define INTEL_OUTPUT_UNKNOWN 9

#define INTEL_OUTPUT_DSI 9

#define INTEL_OUTPUT_UNKNOWN 10

#define INTEL_DVO_CHIP_NONE 0

#define INTEL_DVO_CHIP_LVDS 1

#define INTEL_DVO_CHIP_TMDS 2

#define INTEL_DVO_CHIP_TVOUT 4

#define INTEL_DSI_COMMAND_MODE	0

#define INTEL_DSI_VIDEO_MODE	1

struct intel_framebuffer {

	struct drm_framebuffer base;

	struct drm_i915_gem_object *obj;