Move old vkernel code out of vboot_firmware.

vboot_firmware/lib/vboot_kernel.c

 /* Copyright (c) 2010 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 loading a kernel from disk.
  * (Firmware portion)
  */
 
 #include "vboot_kernel.h"
 
@@ skipping 88 matching lines @@
         return 1;
     }
     Free(gptdata->secondary_header);
   }
 
   /* Success */
   return 0;
 }
 
 
-int LoadKernel2(LoadKernelParams* params) {
+int LoadKernel(LoadKernelParams* params) {
 
   VbPublicKey* kernel_subkey = (VbPublicKey*)params->header_sign_key_blob;
 
   GptData gpt;
   uint64_t part_start, part_size;
   uint64_t blba = params->bytes_per_lba;
   uint64_t kbuf_sectors = KBUF_SIZE / blba;
   uint8_t* kbuf = NULL;
   int found_partitions = 0;
   int good_partition = -1;
@@ skipping 251 matching lines @@
     /* Success! */
     return LOAD_KERNEL_SUCCESS;
   }
 
   // Handle error cases
   if (found_partitions)
     return LOAD_KERNEL_INVALID;
   else
     return LOAD_KERNEL_NOT_FOUND;
 }