drm/i915: sync SDVO code with stable userland modesetting driver

Pull in an update from the 2D driver (hopefully the last one, future work
should be done here and pulled back into xf86-video-intel as needed).
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>

drivers/gpu/drm/i915/intel_display.c

@@ -755,6 +755,8 @@ static void intel_crtc_mode_set(struct drm_crtc *crtc,
 		case INTEL_OUTPUT_SDVO:
 		case INTEL_OUTPUT_HDMI:
 			is_sdvo = true;
+			if (intel_output->needs_tv_clock)
+				is_tv = true;
 			break;
 		case INTEL_OUTPUT_DVO:
 			is_dvo = true;

drivers/gpu/drm/i915/intel_drv.h

@@ -82,6 +82,7 @@ struct intel_output {
 	struct intel_i2c_chan *i2c_bus; /* for control functions */
 	struct intel_i2c_chan *ddc_bus; /* for DDC only stuff */
 	bool load_detect_temp;
+	bool needs_tv_clock;
 	void *dev_priv;
 };