Notify: Update for GPS types

libraries/AP_Notify/Display.cpp

@@ -423,7 +423,7 @@ void Display::update_prearm(uint8_t r)
 
 void Display::update_gps(uint8_t r)
 {
-	static const char * gpsfixname[] = {"Other", "NoGPS","NoFix","2D   ","3D   ","DGPS " ,"RTK "};
+	static const char * gpsfixname[] = {"Other", "NoGPS","NoFix","2D   ","3D   ","DGPS ", "RTK f", "RTK F"};
 	char msg [DISPLAY_MESSAGE_SIZE];
     const char * fixname;
     switch  (AP_Notify::flags.gps_status) {
@@ -442,9 +442,12 @@ void Display::update_gps(uint8_t r)
         case AP_GPS::GPS_OK_FIX_3D_DGPS:
             fixname = gpsfixname[5];
             break;
-        case AP_GPS::GPS_OK_FIX_3D_RTK:
+        case AP_GPS::GPS_OK_FIX_3D_RTK_FLOAT:
             fixname = gpsfixname[6];
             break;
+        case AP_GPS::GPS_OK_FIX_3D_RTK_FIXED:
+            fixname = gpsfixname[7];
+            break;
         default:
             fixname = gpsfixname[0];
             break;