efi: Don't use knowledge about efi_guid_t internals

When print GUIDs supply pointer to the efi_guid_t (guid_t) type rather
its internal members.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Serge Hallyn <serge@hallyn.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

security/integrity/platform_certs/efi_parser.c

@@ -55,7 +55,7 @@ int __init parse_efi_signature_list(
 		memcpy(&list, data, sizeof(list));
 		pr_devel("LIST[%04x] guid=%pUl ls=%x hs=%x ss=%x\n",
 			 offs,
-			 list.signature_type.b, list.signature_list_size,
+			 &list.signature_type, list.signature_list_size,
 			 list.signature_header_size, list.signature_size);
 
 		lsize = list.signature_list_size;