Add TPM version checking

firmware/include/vboot_struct.h

Index: firmware/include/vboot_struct.h
diff --git a/firmware/include/vboot_struct.h b/firmware/include/vboot_struct.h
index f43642740a18b6f2ad0f559b72c2903ba9f7ac11..7cf8803258c80780378c0ac2431d5157bbbb11ee 100644
--- a/firmware/include/vboot_struct.h
+++ b/firmware/include/vboot_struct.h
@@ -204,9 +204,13 @@ typedef struct VbSharedDataHeader {
   uint8_t check_fw_b_result;          /* Result of checking RW firmware B */
   uint8_t firmware_index;             /* Firmware index returned by
                                        * LoadFirmware() or 0xFF if failure */
-  uint32_t fw_version_tpm_start;      /* Firmware TPM version at start */
+  uint32_t fw_version_tpm_start;      /* Firmware TPM version at start of
+                                       * LoadFirmware() */
   uint32_t fw_version_lowest;         /* Firmware lowest version found */
 
+  uint32_t fw_version_tpm;            /* Current firmware version in TPM */
+  uint32_t kernel_version_tpm;        /* Current kernel version in TPM */
+
   /* After read-only firmware which uses version 1 is released, any additional
    * fields must be added below, and the struct version must be increased.
    * Before reading/writing those fields, make sure that the struct being