Another amd64 build break

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

With sources updated a few minutes ago (and reverting of skrll's other 
build break), I see the following:

#      link  GENERIC/netbsd
/build/netbsd-local/tools/x86_64/amd64/bin/x86_64--netbsd-ld -Map netbsd.map 
--cref -T /build/netbsd-local/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
linux_misc.o: In function `linux_sys_utimes':
linux_misc.c:(.text+0x194a): multiple definition of `linux_sys_utimes'
linux32_missing.o:linux32_missing.c:(.text+0x232): first defined here
linux_misc.o: In function `linux_sys_lutimes':
linux_misc.c:(.text+0x19be): multiple definition of `linux_sys_lutimes'
linux32_missing.o:linux32_missing.c:(.text+0x2a6): first defined here
*** [netbsd] Error code 1


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