block: Consolidate phys_segment and hw_segment limits

Except for SCSI no device drivers distinguish between physical and
hardware segment limits.  Consolidate the two into a single segment
limit.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c
index 09b633d..381fe03 100644
--- a/drivers/mmc/card/queue.c
+++ b/drivers/mmc/card/queue.c
@@ -155,8 +155,7 @@
 		if (mq->bounce_buf) {
 			blk_queue_bounce_limit(mq->queue, BLK_BOUNCE_ANY);
 			blk_queue_max_hw_sectors(mq->queue, bouncesz / 512);
-			blk_queue_max_phys_segments(mq->queue, bouncesz / 512);
-			blk_queue_max_hw_segments(mq->queue, bouncesz / 512);
+			blk_queue_max_segments(mq->queue, bouncesz / 512);
 			blk_queue_max_segment_size(mq->queue, bouncesz);
 
 			mq->sg = kmalloc(sizeof(struct scatterlist),
@@ -182,8 +181,7 @@
 		blk_queue_bounce_limit(mq->queue, limit);
 		blk_queue_max_hw_sectors(mq->queue,
 			min(host->max_blk_count, host->max_req_size / 512));
-		blk_queue_max_phys_segments(mq->queue, host->max_phys_segs);
-		blk_queue_max_hw_segments(mq->queue, host->max_hw_segs);
+		blk_queue_max_segments(mq->queue, host->max_hw_segs);
 		blk_queue_max_segment_size(mq->queue, host->max_seg_size);
 
 		mq->sg = kmalloc(sizeof(struct scatterlist) *