block: remove a superflous ifdef in blkdev.h

It doesn't hurt to always have the blk_zone_cond_str prototype, and the
two inlines can also be defined unconditionally.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20220706070350.1703384-2-hch@lst.deSigned-off-by: Jens Axboe <axboe@kernel.dk>

include/linux/blkdev.h

@@ -899,8 +899,6 @@ static inline struct request_queue *bdev_get_queue(struct block_device *bdev)
 	return bdev->bd_queue;	/* this is never NULL */
 }
 
-#ifdef CONFIG_BLK_DEV_ZONED
-
 /* Helper to convert BLK_ZONE_ZONE_XXX to its string format XXX */
 const char *blk_zone_cond_str(enum blk_zone_cond zone_cond);
 
@@ -915,7 +913,6 @@ static inline unsigned int bio_zone_is_seq(struct bio *bio)
 	return blk_queue_zone_is_seq(bdev_get_queue(bio->bi_bdev),
 				     bio->bi_iter.bi_sector);
 }
-#endif /* CONFIG_BLK_DEV_ZONED */
 
 /*
  * Return how much of the chunk is left to be used for I/O at a given offset.