Enable Personal IRIS 4D/20 and 4D/25 support:
- Adapt int(4) to handle the INT1 chip
- Move generic rtc clocks out of hpc/ and into dev/
- Handle the very strangely wired eeprom and other bits

Enable Personal IRIS 4D/20 and 4D/25 support:
- Adapt int(4) to handle the INT1 chip
- Move generic rtc clocks out of hpc/ and into dev/
- Handle the very strangely wired eeprom and other bits in arcemu
- Sprinkle MACH_SGI_IP6 as necessary
- Enable IP6/IP10 devices in GENERIC32_IP12. Yes, the naming is poor but
there's no winning with kernel/hw compatibility on sgimips...

Tested on my 4D/25. Doesn't (appear to) break macallan@'s IP22.

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Become a good vcons citizen.
Also, don't use the cursor sprite as text cursor - it's not worth the pain and
the sprite doesn't have an invert-background plane either so the cursor wasn't
transparent.

Become a good vcons citizen.
Also, don't use the cursor sprite as text cursor - it's not worth the pain and
the sprite doesn't have an invert-background plane either so the cursor wasn't
transparent.
Instead blit the cursor using the appropriate ROPs. This way we get rid of the
cursor misplacement problem as well.
While there also use device_t.
TODO: arbitrary font sizes, cleanup, support for mapping all blitter registers
so we can use them from X.

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Enable light(4).

Provide a pseudo-pci bus for the following PCI ethernet boards, which live
behind custom PCI<->GIO bridges:
- Set Engineering GIO Fast Ethernet (TI ThunderLAN)
- Phobos G100 (DEC 21140?)
- Phobos

Provide a pseudo-pci bus for the following PCI ethernet boards, which live
behind custom PCI<->GIO bridges:
- Set Engineering GIO Fast Ethernet (TI ThunderLAN)
- Phobos G100 (DEC 21140?)
- Phobos G130 (DEC 21143)
- Phobos G160 (DEC 21143)

All boards present the chipsets' pci configuration registers at some
defined offset in their slots' address space as well as device registers.
We simply allow the MI pci subsystem to attach the devices.

This has been tested with a G130 board (DEC 21143) and works well on IP20
and IP24. The Set Engineering board attaches, works fine when receiving and
lightly transmitting, but chokes for unknown reasons on heavy transmits.
The tl(4) driver may need some fixing.

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merge ktrace-lwp.

Many fixes to the grtwo wscons driver:

* fills seem to be broken. Avoid filling large vertical regions; instead,
attempt to break it up into managable chunks. This doesn't work perfectly
eithe

Many fixes to the grtwo wscons driver:

* fills seem to be broken. Avoid filling large vertical regions; instead,
attempt to break it up into managable chunks. This doesn't work perfectly
either, so clear the screen row-by-row (which does work).
* Characters are now right-side-up
* the driver now uses screen coordinates properly.

With the exception of column erases (which fall prey to the fill issue), the
driver is now usable.

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Add GR2.

Support for SGI NG1 ("newport") graphics controller.

Replace lots of 8x<space> with <tabs> and other miscellaneous indentation
fixes.
Wrap a couple of long lines.
Use <return-type>\n<function name> as per KNF in a few places.

Autoconfiguration glue changes for Indigo2/Indy support.

Simple GIO glue.