Rearrange vboot_reference directories to isolate external components.

src/platform/vboot_reference/vboot_firmware/linktest/main.c

+#include <stdio.h>
+
+#include "firmware_image_fw.h"
+#include "kernel_image_fw.h"
+#include "load_kernel_fw.h"
+#include "rollback_index.h"
+#include "tlcl.h"
+
+int main(void)
+{
+
+  // firmware_image_fw.h
+  VerifyFirmwareHeader(0, 0, 0, 0);
+  VerifyFirmwarePreamble(0, 0, 0, 0);
+  VerifyFirmwareData(0, 0, 0, 0, 0);
+  VerifyFirmware(0, 0, 0);
+  GetLogicalFirmwareVersion(0);
+  VerifyFirmwareDriver_f(0, 0, 0, 0, 0);
+
+  // kernel_image_fw.h
+  VerifyKernelHeader(0, 0, 0, 0, 0, 0);
+  VerifyKernelConfig(0, 0, 0, 0);
+  VerifyKernelData(0, 0, 0, 0, 0);
+  VerifyKernel(0, 0, 0);
+  GetLogicalKernelVersion(0);
+  VerifyKernelDriver_f(0, 0, 0, 0);
+
+  // load_kernel_fw.h
+  // FIXME: LoadKernel(0);
+
+  // rollback_index.h
+  SetupTPM();
+  GetStoredVersion(0);
+  WriteStoredVersion(0, 0);
+  LockStoredVersion(0);
+
+  // tlcl.h
+  TlclLibinit();
+  TlclStartup();
+  TlclSelftestfull();
+  TlclDefineSpace(0, 0, 0);
+  TlclWrite(0, 0, 0);
+  TlclRead(0, 0, 0);
+  TlclWriteLock(0);
+  TlclReadLock(0);
+  TlclAssertPhysicalPresence();
+  TlclSetNvLocked();
+  TlclIsOwned();
+  TlclForceClear();
+  TlclPhysicalEnable();
+  TlclPhysicalSetDeactivated(0);
+  TlclGetFlags(0, 0);
+
+  return 0;
+}