amd64 build break

[Paul Goyette <paul%whooppee.com@localhost>]

With sources updated as of 2013-08-30 at 21:20:00 UTC

#      link  INSTALL/netbsd
/test-bed/tools/bin/x86_64--netbsd-ld -Map netbsd.map --cref -T 
/test-bed/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
x86_machdep.o: In function `module_init_md':
x86_machdep.c:(.text+0x62e): undefined reference to `md_root_setconf'


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