[RFT] Automatic load of USB kernel modules

Hi,

I've been working today on getting auto load of USB kernel modules working 
properly. I've identified and fixed several issues since the initial patch by 
Robert Millan was posted. I would like to request testing of the attached 
patch before I commit it. The patch is about only having ukbd, ums and umass 
per default in the kernel GENERIC config file(s).

The 9-current kernel version you need to checkout is:

http://svn.freebsd.org/changeset/base/223519

And you need to make sure you have the file mentioned in the commit above 
under /etc/devd/ else the new stuff will not work.

No userspace changes except the bus_auto.conf file is required.

At the present moment ukbd and ums will not auto load because they don't 
export any USB device entries. This will get fixed before the final auto load 
commit.

--HPS