vboot: Separate vboot from chromeos

VBOOT_VERIFY_FIRMWARE should be independent of CHROMEOS. This allows use
of verified boot library without having to stick to CHROMEOS.

BUG=chrome-os-partner:55639

Change-Id: Ia2c328712caedd230ab295b8a613e3c1ed1532d9
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/15867
Tested-by: build bot (Jenkins)
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>

src/vboot/secdata_mock.c

@@ -0,0 +1,38 @@
+/* Copyright (c) 2015 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.
+ *
+ * Functions for querying, manipulating and locking rollback indices
+ * stored in the TPM NVRAM.
+ */
+
+#include <antirollback.h>
+#include <stdlib.h>
+#include <vb2_api.h>
+
+uint32_t tpm_extend_pcr(struct vb2_context *ctx, int pcr,
+			enum vb2_pcr_digest which_digest)
+{
+	return TPM_SUCCESS;
+}
+
+uint32_t tpm_clear_and_reenable(void)
+{
+	return TPM_SUCCESS;
+}
+
+uint32_t antirollback_read_space_firmware(struct vb2_context *ctx)
+{
+	vb2api_secdata_create(ctx);
+	return TPM_SUCCESS;
+}
+
+uint32_t antirollback_write_space_firmware(struct vb2_context *ctx)
+{
+	return TPM_SUCCESS;
+}
+
+uint32_t antirollback_lock_space_firmware()
+{
+	return TPM_SUCCESS;
+}