smbios: coreboot: Update smbios_get_header() to use smbios_info

Use the smbios_info struct in this function, so it can deal with any
version of SMBIOS table.

Also update smbios_update_version_full() to work the same way.

Drop find_next_header() which is now unused.

Signed-off-by: Simon Glass <sjg@chromium.org>

lib/efi_loader/efi_tcg2.c

@@ -1127,7 +1127,8 @@ tcg2_measure_smbios(struct udevice *dev,
 	       (void *)((uintptr_t)entry->struct_table_address),
 	       entry->table_maximum_size);
 
-	smbios_prepare_measurement(entry, smbios_copy);
+	smbios_prepare_measurement(entry, smbios_copy,
+				   entry->table_maximum_size);
 
 	ret = measure_event(dev, 1, EV_EFI_HANDOFF_TABLES2, event_size,
 			    (u8 *)event);