drm/edid: Clear EDID Deep Color Modes in drm_reset_display_info()

Even though we have the other drm_display_info fields reset, the DC
modes are missing.

This shouldn't be an issue since it's explicitly reset every time a new
EDID is parsed.
Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220125093251.594772-1-maxime@cerno.tech

drivers/gpu/drm/drm_edid.c

@@ -5340,6 +5340,9 @@ drm_reset_display_info(struct drm_connector *connector)
 	info->rgb_quant_range_selectable = false;
 	memset(&info->hdmi, 0, sizeof(info->hdmi));
 
+	info->edid_hdmi_rgb444_dc_modes = 0;
+	info->edid_hdmi_ycbcr444_dc_modes = 0;
+
 	info->non_desktop = 0;
 	memset(&info->monitor_range, 0, sizeof(info->monitor_range));