[BLOCK] Get rid of request_queue_t typedef

Some of the code has been gradually transitioned to using the proper
struct request_queue, but there's lots left. So do a full sweet of
the kernel and get rid of this typedef and replace its uses with
the proper type.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c
index 988c8ce..5e1c99f 100644
--- a/drivers/message/i2o/i2o_block.c
+++ b/drivers/message/i2o/i2o_block.c
@@ -159,7 +159,7 @@
  *	Returns 0 on success or negative error code on failure.
  */
 
-static int i2o_block_issue_flush(request_queue_t * queue, struct gendisk *disk,
+static int i2o_block_issue_flush(struct request_queue * queue, struct gendisk *disk,
 				 sector_t * error_sector)
 {
 	struct i2o_block_device *i2o_blk_dev = queue->queuedata;
@@ -445,7 +445,7 @@
 {
 	struct i2o_block_request *ireq = req->special;
 	struct i2o_block_device *dev = ireq->i2o_blk_dev;
-	request_queue_t *q = req->q;
+	struct request_queue *q = req->q;
 	unsigned long flags;
 
 	if (end_that_request_chunk(req, uptodate, nr_bytes)) {