leverage flashrom fast partial read function to speed up VPD read.

include/lib/flashrom.h

 /*
  * Copyright 2010, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *    * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 15 matching lines @@
 #ifndef __LIB_FLASHROM_H__
 #define __LIB_FLASHROM_H__
 
 #include <inttypes.h>
 
 enum {
   FLASHROM_OK = 0,
   FLASHROM_FAIL,
 };
 
-int flashromRead(const char* tmp_file);
+int flashromRead(const char* part_file, const char* full_file,
+                 const char* partition_name);
 
-int flashromPartialWrite(const char* tmp_file,
-                         const off_t section_offset,
-                         const size_t section_size);
+int flashromPartialWrite(const char* part_file, const char* full_file,
+                         const char* partition_name);
 
 #endif /* __LIB_FLASHROM_H__ */