port-hppa/53619: Netinstall on hppa broken

[tobiasu%tmux.org@localhost]

>Number:         53619
>Category:       port-hppa
>Synopsis:       Netinstall on hppa broken
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-hppa-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Sep 19 09:10:00 +0000 2018
>Originator:     Tobias Ulmer
>Release:        8.99.2X ??
>Organization:
>Environment:
>Description:
http://nycdn.netbsd.org/pub/NetBSD-daily/HEAD/latest/hppa/installation/

Both images from the above location go no further than "Hard booted." (afaict that's the PDC message when it hands over control?)

The LIF boot loader line does not show. This was tested on two different machines (J6750, HP 9000/705 "Flounder"), both appear to hang hard and had to be power cycled.

8.0 netinstall images boot OK and load the kernel.
>How-To-Repeat:

>Fix: