i386 MP default configuration support for NetBSD

Note

The following patches have already been submitted to NetBSD-current and will be part of NetBSD-7 at the latest.

mpbios_patch	patch against src/sys/arch/x86/x86/mpbios.c Revision 1.60
mpbios.c	patched src/sys/arch/x86/x86/mpbios.c

eisa_patch	patch against src/sys/arch/i386/eisa/eisa_machdep.c Revision 1.37
eisa_machdep.c	patched src/sys/arch/i386/eisa/eisa_machdep.c

netbsd.gz	(gzipped) patched NetBSD/i386 6.1 GENERIC kernel, mp_verbose disabled
netbsd_mpv.gz	(gzipped) patched NetBSD/i386 6.1 GENERIC kernel, mp_verbose enabled