Build break on port sun2

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

With sources updated on 2013-01-09 at 01:18:30 UTC, I am seeing the 
following error:

#   compile  GENERIC/pmap.o
/build/netbsd-local/tools/x86_64/sun2/bin/m68010--netbsdelf-gcc -msoft-float 
-fno-defer-pop -ffreestanding -fno-zero-initialized-in-bss -Os 
-fno-strict-aliasing -fno-common -std=gnu99 -Werror -Wall -Wno-main 
-Wno-format-zero-length -Wpointer-arith -Wmissing-prototypes 
-Wstrict-prototypes -Wold-style-definition -Wswitch -Wshadow -Wcast-qual 
-Wwrite-strings -Wno-unreachable-code -Wno-pointer-sign -Wno-attributes 
-Wno-sign-compare --sysroot=/build/netbsd-local/dest/sun2 -Dsun2 -I. 
-I/build/netbsd-local/src/sys/../common/include 
-I/build/netbsd-local/src/sys/arch -I/build/netbsd-local/src/sys -nostdinc 
-D_SUN2_ -DNFS_RSIZE=1024 -DNFS_WSIZE=1024 -DMAXUSERS=4 -D_KERNEL -D_KERNEL_OPT 
-std=gnu99 
-I/build/netbsd-local/src/sys/lib/libkern/../../../common/lib/libc/quad 
-I/build/netbsd-local/src/sys/lib/libkern/../../../common/lib/libc/string 
-I/build/netbsd-local/src/sys/lib/libkern/../../../common/lib/libc/arch/m68k/string
 -c /build/netbsd-local/src/sys/arch/sun2/sun2/pmap.c
/build/netbsd-local/src/sys/arch/sun2/sun2/pmap.c:3686:1: error: conflicting 
types for 'pmap_prefer'
./machine/pmap.h:53:13: note: previous declaration of 'pmap_prefer' was here
*** [pmap.o] Error code 1


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