drm/edid: Add display_info.rgb_quant_range_selectable

Move the CEA-861 QS bit handling entirely into the edid code. No
need to bother the drivers with this.

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: "David (ChunMing) Zhou" <David1.Zhou@amd.com>
Cc: amd-gfx@lists.freedesktop.org
Cc: Eric Anholt <eric@anholt.net> (supporter:DRM DRIVERS FOR VC4)
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20190108172828.15184-4-ville.syrjala@linux.intel.com

drivers/gpu/drm/vc4/vc4_hdmi.c

@@ -109,7 +109,6 @@ struct vc4_hdmi_encoder {
 	struct vc4_encoder base;
 	bool hdmi_monitor;
 	bool limited_rgb_range;
-	bool rgb_range_selectable;
 };
 
 static inline struct vc4_hdmi_encoder *
@@ -280,11 +279,6 @@ static int vc4_hdmi_connector_get_modes(struct drm_connector *connector)
 
 	vc4_encoder->hdmi_monitor = drm_detect_hdmi_monitor(edid);
 
-	if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) {
-		vc4_encoder->rgb_range_selectable =
-			drm_rgb_quant_range_selectable(edid);
-	}
-
 	drm_connector_update_edid_property(connector, edid);
 	ret = drm_add_edid_modes(connector, edid);
 	kfree(edid);
@@ -435,8 +429,7 @@ static void vc4_hdmi_set_avi_infoframe(struct drm_encoder *encoder)
 					   hdmi->connector, mode,
 					   vc4_encoder->limited_rgb_range ?
 					   HDMI_QUANTIZATION_RANGE_LIMITED :
-					   HDMI_QUANTIZATION_RANGE_FULL,
-					   vc4_encoder->rgb_range_selectable);
+					   HDMI_QUANTIZATION_RANGE_FULL);
 
 	frame.avi.right_bar = cstate->tv.margins.right;
 	frame.avi.left_bar = cstate->tv.margins.left;