Make bootloader 'time' command work correctly on luna88k.

Now the correct date is displayed instead of January 1, 1970.

Tested on LUNA-88K2 and nono emulator by me.

"make sense" miod@

Switch the luna88k boot loader to the MI boot code, to ease future maintainence
of it. Crank version to 0.8.
ok aoyama@

Fix the bootloader random hang-up while counting down on LUNA-88K2.
The same logic is also applied to luna88k/dev/timekeeper.c.

suggested and ok miod@

More cleanups:
- accept empty controller and partition numbers, as well as empty filenames,
and use defaults (0, 0 and "bsd") instead of complaining the boot path
is invalid.
- do not attempt to

More cleanups:
- accept empty controller and partition numbers, as well as empty filenames,
and use defaults (0, 0 and "bsd") instead of complaining the boot path
is invalid.
- do not attempt to detect and report devices at boot, using a small
list of possible devices (only scsi id #6 and #5, come on!).
Instead, parse the user-supplied boot string to figure out which controller
and device to talk to. (still no SCSI LUN support, though).

Because of the last change, SCSI unit numbers ought to match the PROM
numbering now (10 * controller + 6 - device id).

Crank version to 0.2.

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The first steps of a native OpenBSD/luna88k bootloader. Able to boot ELF
kernels with symbols from disk or network.
Based upon the NetBSD/luna68k bootloader which got recently overhauled from
4.3BSD

The first steps of a native OpenBSD/luna88k bootloader. Able to boot ELF
kernels with symbols from disk or network.
Based upon the NetBSD/luna68k bootloader which got recently overhauled from
4.3BSD (thanks, tsutsui@ !), updated to match the luna88k hardware layout
and turned into a polling-only binary.
Tested on luna88k (not -2) only so far.

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