efi_loader: calculate crc32 for EFI tables

For the boot and runtime services tables and for the system table the
crc32 has to be set in the header.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

include/efi_loader.h

@@ -202,6 +202,8 @@ extern struct list_head efi_obj_list;
 /* List of all events */
 extern struct list_head efi_events;
 
+/* Called by bootefi to initialize runtime */
+efi_status_t efi_initialize_system_table(void);
 /* Called by bootefi to make console interface available */
 int efi_console_register(void);
 /* Called by bootefi to make all disk storage accessible as EFI objects */