K 10
svn:author
V 6
tsoome
K 8
svn:date
V 27
2016-11-19T08:54:21.437878Z
K 7
svn:log
V 553
lsdev device name section headers should be printed by dv_print callback.

lsdev command does walk over devsw list, prints list element name and
will use dv_print() callback to print the device list.
Unfortunately this approach will add unneeded noise when there are no
particular devices detected.

To remove "empty" device section headers, the dv_print() callback
should print the header instead.

In addition, fixed dv_print callback for md module.

Reviewed by:	imp
Approved by:	imp (mentor)
Differential Revision:	https://reviews.freebsd.org/D8551

END