block: constify the lim argument to queue_limits_max_zone_append_sectors

queue_limits_max_zone_append_sectors doesn't change the lim argument,
so mark it as const.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Tested-by: Hans Holmberg <hans.holmberg@wdc.com>
Reviewed-by: Hans Holmberg <hans.holmberg@wdc.com>
Link: https://lore.kernel.org/r/20240826173820.1690925-3-hch@lst.de


Signed-off-by: Jens Axboe <axboe@kernel.dk>