Bump config(1) version.

config(1) still keeps backward-compatibility; it is more permissive than
before.  The tree, however, needs the updated config(1), mainly to strictly
define attribute ("module") ownership and dependencies.
To make sure that I'm not doing wrong, try to define ffs/ufs/vfs dependencies
a little more strictly.
Move audio related definitions.
Move athn definitions.
whitespace
use long constant
Define net attribute.  Always select it for now.
try to make vax work.
PR/49270: Hauke Fath: Samsung NC10 Marvell Yukon ethernet not supported