libm Makefile: add fma() functions for mips.

This pushed the ramdisk size, so that needed to be bumped as well.
Otherwise, there were no build issues for either 32 or 64 bit mips.
Sort-of OK'ed by simonb@.

Add dk[0-3] to the device nodes provided in the evbmips ramdisk

The installer provided by octeon.img creates wedges, which may later
need to be recovered via the standard sysinst installer provided by
netbsd-INSTALL_OCTEON.

Remove redundant variable assignment

It got clobbered by another assignment later, and this has been the
case since r. 1.1 of the file.

Add bpf to the device nodes provided in the evbmips ramdisk

Intended to address an issue noted by Denis Ovsienko on port-mips,
where dhcpcd doesn't work with the netbsd-INSTALL_OCTEON kernel. (I am
not able to test this directly, but verified by mounting the ramdisk
images generated before and after this change.)

branches: 1.15.6;
handle mipsn64

PR install/54777: add dhcpcd to the install ramdisk

branches: 1.13.12; 1.13.14;
+= for MAKEFS_FLAGS

branches: 1.12.16; 1.12.20;
just make the installation ptys (ipty); change it to opty if more needed.

Fix build failure. Remove unknown device ttyv0.

branches: 1.10.6; 1.10.8;
Remove terminfo.db as it's now embedded in libterminfo.

Use the rescue terminfo.db in our images instead of termcap.

Merge from matt-nb5-mips64

34 different termcap subsets, plus a couple of ports still using
the full termcap distfile. In an attempt to reduce the madness
switch everyone (except the i386 cd install which does its own
thing) to the same (under 8K) termcap subset:

ansi ansi/pc-term compatible with color
dumb|unknown 80-column dumb tty
hp300h HP Catseye console
iris-ansi-ap IRIS ANSI in application-keypad mode
iris-ansi|iris-ansi-net IRIS emulating 40 line ANSI terminal (almost VT100)
sun|sun1|sun2|sun-il Sun Microsystems Inc. console with working insert-line
vt100|vt100-am DEC VT100 (w/advanced video)
vt220-8 DEC VT220 8 bit terminal
vt220|vt200|vt300 DEC VT220 in vt100 emulation mode
wsvt25 NetBSD wscons in 25 line DEC VT220 mode
wsvt25m NetBSD wscons in 25 line DEC VT220 mode with Meta
x68k|x68k-ite NetBSD/x68k ITE
xterm|vs100 xterm terminal emulator (X Window System)

Trying to provide similar functionality across all ports? It'll never
catch on...

Nothing needs disktab anymore, so we'd rather have an inode and
slightly over 1K of space on install media...

${NETBSDSRCDIR}/distrib/common/protocols => ${DISTRIBDIR}/common/protocols
${NETBSDSRCDIR}/distrib/common/services => ${DISTRIBDIR}/common/services

Alas poor dot.hdprofile. I knew him... not at all Horatio. (Remove)

Use the cutdown distrib/common/services and distrib/common/protocols
rather than the full fat etc versions

branches: 1.2.12; 1.2.24;
Since /etc/services has gotten rather large, use a minimal one for install
kernels. (mount_nfs is notably the only binary that doesn't gracefully deal
with the lack of an /etc/services file, it appears.)

Added evbmips instkernel and sysinst.