Add the nand device support for cbootimage tool.

cbootimage.c

 /**
  * Copyright (c) 2011 NVIDIA Corporation.  All rights reserved.
  *
  * See file CREDITS for list of people who contributed to this
  * project.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation; either version 2 of
  * the License, or (at your option) any later version.
@@ skipping 158 matching lines @@
                 printf("Error opening raw file %s.\n",
                         context.image_filename);
                 goto fail;
         }
 
         /* Parse & process the contents of the config file. */
         process_config_file(&context);
 
         /* Generate the new bct file */
         if (context.generate_bct != 0) {
+                /* Update the BCT */
+                begin_update(&context);

[robotboy, 2011/03/03 18:08:46]

Is this required for the NAND support or is it a separate bug fix?

                 /* Signing the bct. */
                 e = sign_bct(&context, context.bct);
                 if (e != 0) 
                         printf("Signing BCT failed, error: %d.\n", e);
 
                 fwrite(context.bct, 1, sizeof(nvboot_config_table),
                         context.raw_file);
                 printf("New BCT file %s has been successfully generated!\n",
                         context.image_filename);
                 goto fail;
@@ skipping 23 matching lines @@
  fail:
         /* Close the file(s). */
         if (context.raw_file)
                 fclose(context.raw_file);
 
         /* Clean up memory. */
         cleanup_context(&context);
 
         return e;
 }