southbridge/amd: Remove trailing whitespace

Change-Id: I25cdfe6b3c8067793620677c62251e78704f7851
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Reviewed-on: http://review.coreboot.org/6334
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
diff --git a/src/southbridge/amd/agesa/hudson/smbus.c b/src/southbridge/amd/agesa/hudson/smbus.c
index 0c04158..519c85d 100644
--- a/src/southbridge/amd/agesa/hudson/smbus.c
+++ b/src/southbridge/amd/agesa/hudson/smbus.c
@@ -17,8 +17,8 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#ifndef  _HUDSON_SMBUS_C_
-#define  _HUDSON_SMBUS_C_
+#ifndef _HUDSON_SMBUS_C_
+#define _HUDSON_SMBUS_C_
 
 #include <io.h>
 #include <stdint.h>