[gnome-control-center] display: Add support for 21:9 displays

[Bastien Nocera <hadess src gnome org>]

commit 66576dfe24f93b22146e436aea761bc5a3b547cf
Author: StÃphane Graber <stgraber ubuntu com>
Date:   Tue Jan 15 14:48:19 2013 -0500

    display: Add support for 21:9 displays
    
    https://bugzilla.gnome.org/show_bug.cgi?id=691803

 panels/display/cc-display-panel.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/panels/display/cc-display-panel.c b/panels/display/cc-display-panel.c
index e4f2433..5b85a64 100644
--- a/panels/display/cc-display-panel.c
+++ b/panels/display/cc-display-panel.c
@@ -735,6 +735,9 @@ make_resolution_string (int width, int height)
     case 17:
       aspect = "16\342\210\2669";
       break;
+    case 23:
+      aspect = "21\342\210\2669";
+      break;
     case 12:
       aspect = "5\342\210\2664";
       break;