Please fix recent breakage

This might be another one of those commits that were done without
checking the POLLING option:

cc -g -O -pipe -I/usr/src/sys/modules/lnc/../../dev/lnc -Werror
-D_KERNEL -DKLD_MODULE -nostdinc -I-
-I/usr/src/sys/modules/lnc/../../dev/lnc
-include /usr/obj/usr/src/sys/AMD64/opt_global.h -I. -I_at_
-I_at_/contrib/altq -I_at_/../include -finline-limit=8000 -fno-common -g
-fno-omit-frame-pointer -I/usr/obj/usr/src/sys/AMD64 -mcmodel=kernel
-mno-red-zone  -mfpmath=387 -mno-sse -mno-sse2 -mno-mmx -mno-3dnow
-msoft-float -fno-asynchronous-unwind-tables -ffreestanding -Wall
-Wredundant-decls -Wnested-externs -Wstrict-prototypes
-Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual
-fformat-extensions -std=c99
-c /usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c: In function
`alloc_mbuf_cluster':
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c:311: warning: implicit
declaration of function `kvtop'
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c:311: warning: nested
extern declaration of `kvtop'
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c: In function `lnc_init':
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c:967: warning: nested
extern declaration of `kvtop'
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c:311: warning: redundant
redeclaration of 'kvtop'
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c:311: warning: previous
implicit declaration of 'kvtop' was here
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c:975: warning: nested
extern declaration of `kvtop'
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c:311: warning: redundant
redeclaration of 'kvtop'
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c:311: warning: previous
implicit declaration of 'kvtop' was here
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c:995: warning: nested
extern declaration of `kvtop'
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c:311: warning: redundant
redeclaration of 'kvtop'
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c:311: warning: previous
implicit declaration of 'kvtop' was here
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c: In function
`lnc_start':
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c:1290: warning: nested
extern declaration of `kvtop'
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c:311: warning: redundant
redeclaration of 'kvtop'
/usr/src/sys/modules/lnc/../../dev/lnc/if_lnc.c:311: warning: previous
implicit declaration of 'kvtop' was here
*** Error code 1

Stop in /usr/src/sys/modules/lnc.
*** Error code 1