fixed gdisp.h

halext/include/gdisp.h

@@ -18,6 +18,23 @@
     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
+/**
+* @file gdisp.h
+* @brief GDISP Graphic Driver macros and structures.
+*
+* @addtogroup GDISP
+* @{
+*/
+
+#ifndef _GDISP_H
+#define _GDISP_H
+
+#if HAL_USE_GDISP || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver constants. */
+/*===========================================================================*/
+
 /**
  * @brief   Some basic colors
  */