error building kernel with included dtv drivers

[Thomas Klausner <wiz%NetBSD.org@localhost>]

I've tried building an amd64/5.99.55 kernel with the dtv drivers
included, but it fails linking:

#      link  YT/netbsd
/archive/build/tools/bin/x86_64--netbsd-ld -Map netbsd.map --cref -T 
/archive/cvs/src/sys/arch/amd64/conf/kern.ldscript -Ttext 0xffffffff80100000 -e 
start -z max-page-size=0x100000 -X -o netbsd ${SYSTEM_OBJ} ${EXTRA_OBJ} vers.o
lg3303.o: In function `lg3303_get_snr':
/archive/cvs/src/sys/dev/i2c/lg3303.c:329: undefined reference to `dtv_intlog10'
*** [netbsd] Error code 1

The config contains (among other changes to GENERIC):
dtv* at dtvbus?
cxdtv* at pci? dev ? function ?
#iic* at cxdtv?

Let me know if you need the whole config to debug this.
 Thomas