iwi(4) in RELENG_6

[Bartosz Fabianowski]

Since the iwi driver has been MFC'd, I cannot build a kernel any more. I 
csupped my src/sys to RELENG_6 a couple of hours ago. Everything 
compiles fine, but when linking the kernel, make barfs:

linking kernel
if_iwi.o(.text+0x29c4): In function `iwi_getfw':
: undefined reference to `firmware_get'
if_iwi.o(.text+0x29d3): In function `iwi_getfw':
: undefined reference to `firmware_get'
if_iwi.o(.text+0x2a1d): In function `iwi_put_fw':
: undefined reference to `firmware_put'
if_iwi.o(.text+0x49a5): In function `iwi_init_locked':
: undefined reference to `firmware_get'

I have "device iwi" in my kernel configuration. Should I remove it and 
use a module instead? Or is this supposed to work?

- Bartosz