WorkStruct: make allyesconfig

Fix up for make allyesconfig.

Signed-Off-By: David Howells <dhowells@redhat.com>
diff --git a/drivers/message/i2o/i2o_block.h b/drivers/message/i2o/i2o_block.h
index 4fdaa5b..d9fdc95 100644
--- a/drivers/message/i2o/i2o_block.h
+++ b/drivers/message/i2o/i2o_block.h
@@ -96,7 +96,7 @@
 
 /* I2O Block device delayed request */
 struct i2o_block_delayed_request {
-	struct work_struct work;
+	struct delayed_work work;
 	struct request_queue *queue;
 };