Hello , Need input on a driver I am porting

[Richard Neese]

I am trying to port a driver from openbsd to freebsd . The zyd driver aka 
ZyDas usb wifi driver I have the c and header file and I got it in 
to /sys/config  and the driver is in /sys/dev/usb and I added it to the 
KERNEL file but it cant find 3 files when running make depend.

bpfilter.h  sys/timeout.h  sys/device.h

Please point me to how to either fix this or what I should do...