One more build break - port hp700

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

building standard spmath library
#   compile  GENERIC/kern_mutex.o
/build/netbsd-local/tools/x86_64/hp700/bin/hppa--netbsd-gcc -mpa-risc-1-1 
-msoft-float -mdisable-fpregs -mno-space-regs -mfast-indirect-calls 
-mportable-runtime -fno-omit-frame-pointer -ffreestanding 
-fno-zero-initialized-in-bss -O2 -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/hp700 
-Dhppa -Dhp700 -I. -I/build/netbsd-local/src/sys/../common/include 
-I/build/netbsd-local/src/sys/arch -I/build/netbsd-local/src/sys -nostdinc 
-DHP8700_CPU -DGSCVERBOSE -DMAXUSERS=32 -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/hppa/string
 -I/build/netbsd-local/src/sys/external/bsd/ipf -c 
/build/netbsd-local/src/sys/kern/kern_mutex.c
/build/netbsd-local/src/sys/kern/kern_mutex.c:223:1: error: redefinition of 
'MUTEX_CLEAR_WAITERS'
./hppa/mutex.h:175:1: note: previous definition of 'MUTEX_CLEAR_WAITERS' was 
here
*** [kern_mutex.o] Error code 1

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