as the commit: "lib/vsprintf: implement bitmap printing through
'%*pb[l]'" add an easy way to print bitmaps. so printk-formats.txt
should reflect it.
Signed-off-by: NWang Long <long.wanglong@huawei.com>
Acked-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NJonathan Corbet <corbet@lwn.net>