mmc_block: tell block layer there is no seek penalty

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

drivers/mmc/card/queue.c

@@ -132,6 +132,7 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, spinlock_t *lock
 
 	blk_queue_prep_rq(mq->queue, mmc_prep_request);
 	blk_queue_ordered(mq->queue, QUEUE_ORDERED_DRAIN, NULL);
+	queue_flag_set_unlocked(QUEUE_FLAG_NONROT, mq->queue);
 
 #ifdef CONFIG_MMC_BLOCK_BOUNCE
 	if (host->max_hw_segs == 1) {