Make #include guard naming consistent

Change-Id: Ie13e8af0bb74ed290f811dcad64ad06c9d8cb4fa
Signed-off-by: Marc Schink <openocd-dev@marcschink.de>
Reviewed-on: http://openocd.zylin.com/2956
Tested-by: jenkins
Reviewed-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>

src/target/openrisc/or1k_du.h

@@ -16,8 +16,8 @@
  *   along with this program.  If not, see <http://www.gnu.org/licenses/>. *
  ***************************************************************************/
 
-#ifndef OR1K_DU
-#define OR1K_DU
+#ifndef OPENOCD_TARGET_OPENRISC_OR1K_DU_H
+#define OPENOCD_TARGET_OPENRISC_OR1K_DU_H
 
 #ifdef HAVE_CONFIG_H
 #include "config.h"
@@ -75,5 +75,4 @@ int or1k_adv_jtag_jsp_xfer(struct or1k_jtag *jtag_info,
 				  int *out_len, unsigned char *out_buffer,
 				  int *in_len, unsigned char *in_buffer);
 
-#endif
-
+#endif /* OPENOCD_TARGET_OPENRISC_OR1K_DU_H */