Fix crossystem on amd64 boards

Since x86 and amd64 boards use the same firmware and are otherwise identical
use the same implementation for crossystem on both

BUG=chromium-os:21386
TEST=emerge-x86-generic ; test crossystem works on Samsung Series 5
TEST=emerge-amd64-generic ; test crossystem works on Samsung Series 5
TEST=run unit tests on build machine with:
RUNTESTS=1 make

Change-Id: Ica516cca7ead6cb9cdfae0894bd532669ba3ba88
Reviewed-on: https://gerrit.chromium.org/gerrit/12059
Tested-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Commit-Ready: Sonny Rao <sonnyrao@chromium.org>

host/arch/amd64/lib/crossystem_arch.c

@@ -1,57 +0,0 @@
-/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-/* crossystem is only valid on devices, not on the host, but since
- * it's part of the host library, we need a dummy implementation (all
- * functions return errors) */
-
-#include <stdio.h>
-#include <string.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <ctype.h>
-
-#include "host_common.h"
-
-#include "crossystem.h"
-#include "crossystem_arch.h"
-#include "utility.h"
-#include "vboot_common.h"
-#include "vboot_nvstorage.h"
-#include "vboot_struct.h"
-
-int VbReadNvStorage(VbNvContext* vnc) {
-  return -1;
-}
-
-
-int VbWriteNvStorage(VbNvContext* vnc) {
-  return -1;
-}
-
-
-VbSharedDataHeader* VbSharedDataRead(void) {
-  return NULL;
-}
-
-
-int VbGetArchPropertyInt(const char* name) {
-  return -1;
-}
-
-
-const char* VbGetArchPropertyString(const char* name, char* dest, int size) {
-  return NULL;
-}
-
-
-int VbSetArchPropertyInt(const char* name, int value) {
-  return -1;
-}
-
-
-int VbSetArchPropertyString(const char* name, const char* value) {
-  return -1;
-}

host/arch/amd64/lib/crossystem_arch.c

@@ -0,0 +1 @@
+../../x86/lib/crossystem_arch.c