[PATCH] fix request->cmd == INT cases

- I have unearthed very old bugs in stale drivers that still
   used request->cmd as a READ|WRITE int
 - This patch is maybe a proof that these drivers have not been
   used for a long time. Should they be removed completely?

Drivers that currently do not work for sure:
 drivers/acorn/block/fd1772.c |    2 +-
 drivers/acorn/block/mfmhd.c  |    8 ++++----
 drivers/cdrom/aztcd.c        |    2 +-
 drivers/cdrom/cm206.c        |    2 +-
 drivers/cdrom/gscd.c         |    2 +-
 drivers/cdrom/mcdx.c         |    2 +-
 drivers/cdrom/optcd.c        |    2 +-
 drivers/cdrom/sjcd.c         |    2 +-

Drivers with cosmetic fixes only:
  b/drivers/block/amiflop.c
  b/drivers/block/nbd.c
  b/drivers/ide/legacy/hd.c

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

drivers/ide/legacy/hd.c

@@ -623,7 +623,8 @@ repeat:
 	cyl   = track / disk->head;
 #ifdef DEBUG
 	printk("%s: %sing: CHS=%d/%d/%d, sectors=%d, buffer=%p\n",
-		req->rq_disk->disk_name, (req->cmd == READ)?"read":"writ",
+		req->rq_disk->disk_name,
+		req_data_dir(req) == READ ? "read" : "writ",
 		cyl, head, sec, nsect, req->buffer);
 #endif
 	if (blk_fs_request(req)) {