risc-v: add ofctl(8) and /dev/openfirm support

branches: 1.10.8;
evbmips: add ofctl(8) and /dev/openfirm support

Add initial support for ARMv8 (AARCH64) (by nisimura@ and ryo@)

- sys/arch/evbarm64 is gone and integrated into sys/arch/evbarm. (by skrll@)
- add support fdt. evbarm/conf/GENERIC64 fdt (bcm2837,sunxi,tegra) based generic 64bit kernel config. (by skrll@, jmcneill@)

branches: 1.8.26;
This change arm, armeb, earm, earmeb, earmhf, earmhfeb so all builds that
share a MACHINE_ARCH for userland so that except for etc, will produce
identical sets.

usr/include/machine now points to usr/include/arm

branches: 1.7.6; 1.7.12;
Make ofctl for ofppc machines.

System utilities, boot programs and kernel modules are machine
(port) specific not CPU, so use MACHINE not MACHINE_ARCH.

Convert more MACHINE tests to MACHINE_ARCH

branches: 1.4.20;
ofctl can write its OFW tree to a proplib. (reading from a proplib doesn't
quite work yet).

build ofctl on sparc

fix typo

Add gimpy's OF device tree dumping tool.
Tested on macppc and sparc64

Document -l, -r, and -w, based on input by jmcneill@

Bump date.

Merge single-letter options. Use more markup.

Add -v flag which prints the full path of each device node when dumping
the full tree.

branches: 1.4.52; 1.4.58;
Mention that the program is only installed on supported platforms.
(Also add a paragraph break.)

I didn't specifically mention the platforms or what support is needed.
At least someone reading the manpage will have some idea why the tool
is missing from their system.

(Some manual pages mention this in the BUGS section, but I didn't do that.)

Convert TNF licenses to new 2 clause variant

branches: 1.2.16;
Some minor fixes.

Add gimpy's OF device tree dumping tool.
Tested on macppc and sparc64

ofctl.c: use correct casts for relevant ctype(3) calls (NFCI)

The first change is simply because the original int casts were
evidently used to silence the char-subscripts warning, so we might as
well use our standard (save someone else looking at this again).

The latter two changes are in code that's commented out, but should be
relevant there if it's ever restored.

fix various typos in word `interrupt', mainly in comments.

Update for proplib(3) API changes.

Sort options in usage.

Add -v flag which prints the full path of each device node when dumping
the full tree.

branches: 1.12.14;
Implement OF_finddevice, now ofctl -p <path to node> works

if there is no "name" properly, don't assert(), pretend it is empty.
now "ofctl" works on the shark. fixes PR#36733.

Fix WARNS=4 issues (-Wcast-qual -Wsign-compare)
Fixes PR bin/41283

branches: 1.9.6;
Remove the \n and tabs from the __COPYRIGHT() strings.
Tweak to use a consistent format.

branches: 1.8.2;
Convert to new 2 clause license

branches: 1.7.8; 1.7.10;
Add the __COPYRIGHT and __RCSID tags.

Messages passed to errx are not supposed to have a trailing \n. Fix that.

Make format directive match type of of_buflen.

ofctl can write its OFW tree to a proplib. (reading from a proplib doesn't
quite work yet).

make this work with OBP2

Sync usage with man page (correct program name, sort options).

Add gimpy's OF device tree dumping tool.
Tested on macppc and sparc64