[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/block/swim3.c b/drivers/block/swim3.c
index 1a65979..b4e462f 100644
--- a/drivers/block/swim3.c
+++ b/drivers/block/swim3.c
@@ -225,7 +225,7 @@
 static void swim3_select(struct floppy_state *fs, int sel);
 static void swim3_action(struct floppy_state *fs, int action);
 static int swim3_readbit(struct floppy_state *fs, int bit);
-static void do_fd_request(request_queue_t * q);
+static void do_fd_request(struct request_queue * q);
 static void start_request(struct floppy_state *fs);
 static void set_timeout(struct floppy_state *fs, int nticks,
 			void (*proc)(unsigned long));
@@ -290,7 +290,7 @@
 	return (stat & DATA) == 0;
 }
 
-static void do_fd_request(request_queue_t * q)
+static void do_fd_request(struct request_queue * q)
 {
 	int i;
 	for(i=0;i<floppy_count;i++)