monitor-manager-kms: Use the same connector type names as the X server

Switch to the connector type names used by the X server's modesetting
driver which, in particular, fixes DVI-A being labeled DVID.

https://bugzilla.gnome.org/show_bug.cgi?id=770338

src/backends/native/meta-monitor-manager-kms.c

@@ -137,9 +137,23 @@ static char *
 make_output_name (drmModeConnector *connector)
 {
   static const char * const connector_type_names[] = {
-    "unknown", "VGA", "DVII", "DVID", "DVID", "Composite",
-    "SVIDEO", "LVDS", "Component", "9PinDIN", "DisplayPort",
-    "HDMIA", "HDMIB", "TV", "eDP", "Virtual", "DSI"
+    "None",
+    "VGA",
+    "DVI-I",
+    "DVI-D",
+    "DVI-A",
+    "Composite",
+    "SVIDEO",
+    "LVDS",
+    "Component",
+    "DIN",
+    "DP",
+    "HDMI",
+    "HDMI-B",
+    "TV",
+    "eDP",
+    "Virtual",
+    "DSI",
   };
   const char *connector_type_name;