[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/mm/bounce.c b/mm/bounce.c
index ad401fc..179fe38 100644
--- a/mm/bounce.c
+++ b/mm/bounce.c
@@ -190,7 +190,7 @@
 	return 0;
 }
 
-static void __blk_queue_bounce(request_queue_t *q, struct bio **bio_orig,
+static void __blk_queue_bounce(struct request_queue *q, struct bio **bio_orig,
 			       mempool_t *pool)
 {
 	struct page *page;
@@ -275,7 +275,7 @@
 	*bio_orig = bio;
 }
 
-void blk_queue_bounce(request_queue_t *q, struct bio **bio_orig)
+void blk_queue_bounce(struct request_queue *q, struct bio **bio_orig)
 {
 	mempool_t *pool;