kern/53193: -current 20180417 fail to boot on RPI2

[kardel%netbsd.org@localhost]

>Number:         53193
>Category:       kern
>Synopsis:       -current 20180417 fail to boot on RPI2
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 18 06:40:00 +0000 2018
>Originator:     Frank Kardel
>Release:        NetBSD 8.99.14
>Organization:
>Environment:
NetBSD 8.99.14 evbarm - pub/NetBSD-daily/HEAD/201804171210Z/evbarm-earmv7hf/
Machine: evbarm
>Description:
	RPI2 armv7.img.gz fails to boot NetBSD-current as of 201804171210Z, RPI3 boots with that image.
	-current around 20180414 manaed to boot on 1 out of three RPI2. RPI2 are fine - NetBSD 8 gzimages boot on them.
>How-To-Repeat:
	Pick a gzimg from 20180417 put it on SDCARD and attempt to boot - nothing except the 4 colour screen.
	Same image boots on RPI3.
	A NetBSD-8 image from 20180417 also boots on RPI2.
>Fix:
	n/a