Add event queue handling. It triggers activities on events read from
/dev/usb. The actions are specified in the file /etc/usbd.conf.
usbd.c:
- Add event queue (/dev/usb) handling.
- Add comments
- Clean up code some more
usbd.8:
- Update manpage for the new command line flags
- Remove a duplicate FreeBSD tag from it).
usbd.conf, usbd.conf.5, Makefile:
- Add the usbd.conf configuration file and the man page for it.
NOTE: MAKEDEV already creates the /dev/usb device tree node, no change
needed there anymore.