amd/pi/hudson: Fix FCH EC

Move the fchec.h files, which do not seem mainboard specific, out of
the mainboard directories into the southbridge/soc directories.

Change-Id: Idd271c6ab618aa4badf81c702212e7de35317021
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/20677
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com>

src/soc/amd/stoneyridge/include/fchec.h

@@ -13,8 +13,8 @@
  * GNU General Public License for more details.
  */
 
-#ifndef AMD_GARDENIA_FCHEC
-#define AMD_GARDENIA_FCHEC
+#ifndef __AMD_STONEY_FCHEC__
+#define __AMD_STONEY_FCHEC__
 
 #include <soc/imc.h>
 #include "Porting.h"

src/southbridge/amd/pi/hudson/fchec.h

@@ -13,8 +13,8 @@
  * GNU General Public License for more details.
  */
 
-#ifndef AMD_BETTONG_FCHEC
-#define AMD_BETTONG_FCHEC
+#ifndef __AMD_HUDSON_FCHEC__
+#define __AMD_HUDSON_FCHEC__
 
 #include "imc.h"
 #include "Porting.h"