Separate button boxens from keyboards in the HIL device list.

hilkbd will still match both, but will neither do the auto-layout dance nor
attach as console for button boxens.

New hil child devices attachment framework, that allow them to be detached
at runtime.

Handle reconfiguration notices from the loop, and do the necessary
detach/attach work so that our vision of the

New hil child devices attachment framework, that allow them to be detached
at runtime.

Handle reconfiguration notices from the loop, and do the necessary
detach/attach work so that our vision of the loop is in sync with reality.

Adapt all hil child devices to the above changes.

"This is not as plug'n'play as usb, but you get the same feeling anyways..."

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Rework the console management on hppa:
- only attach a keyboard as a console if it matches the PDC keyboard path
- on hil, as there can be multiple keyboards on the loop, attach only the
first hilk

Rework the console management on hppa:
- only attach a keyboard as a console if it matches the PDC keyboard path
- on hil, as there can be multiple keyboards on the loop, attach only the
first hilkbd device configured as console keyboard. Right now this means
the one with the lowest hil code, which was the existing behaviour so far.
- do not try to switch to the wscons consdev structure early at all in
wscons_machdep, but rather wait for the console to be completely
configured (i.e. both wskbd and wsdisplay are attached) to switch.

With feedback and help from mickey@

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Machine independent HP-HIL loop support code.

Derived from the hp300 HIL code, and some information found in XFree86
HP-UX specific parts.

However, this code does not provide an HP-UX compatible /d

Machine independent HP-HIL loop support code.

Derived from the hp300 HIL code, and some information found in XFree86
HP-UX specific parts.

However, this code does not provide an HP-UX compatible /dev/hil* interface,
but will rather attach real BSD drivers to the hil driver glue.

Currently, only a driver for the HP-HIL keyboards is provided. More to come
as resources permit.

The international layout tables for hilkbd are derived from the ite tables
found in the hp300 code, but only the US layout could be tested.

Sample dmesg output on a heavily charged hil loop:
hil0 at gsc0 offset 21000 irq 1
hilkbd0 at hil0 code 1: 109-key keyboard, layout 1b
wskbd0 at hilkbd0: console keyboard
hilkbd1 at hil0 code 2: 109-key keyboard, layout 1f
wskbd1 at hilkbd1
"ID module" at hil0 id 34 code 3 not configured
"ID module" at hil0 id 34 code 4 not configured
"Tablet" at hil0 id 94 code 5 not configured
"Mouse" at hil0 id 68 code 6 not configured

Some feedback from and ok mickey@

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