block: Suppress kernel-doc warnings triggered by blk-zoned.c

Avoid that building with W=1 causes the kernel-doc tool to complain
about undocumented function arguments for the blk-zoned.c source file.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Damien Le Moal <damien.lemoal@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

block/blk-zoned.c

@@ -296,7 +296,7 @@ int blkdev_reset_zones(struct block_device *bdev,
 }
 EXPORT_SYMBOL_GPL(blkdev_reset_zones);
 
-/**
+/*
  * BLKREPORTZONE ioctl processing.
  * Called from blkdev_ioctl.
  */
@@ -355,7 +355,7 @@ int blkdev_report_zones_ioctl(struct block_device *bdev, fmode_t mode,
 	return ret;
 }
 
-/**
+/*
  * BLKRESETZONE ioctl processing.
  * Called from blkdev_ioctl.
  */