port-amd64/54924: NetBSD 9.0_RC1 panic on Dell Latitude 7490 (intel_backlight_register)

[imil%home.imil.net@localhost]

>Number:         54924
>Category:       port-amd64
>Synopsis:       NetBSD 9.0_RC1 panic on Dell Latitude 7490 (intel_backlight_register)
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    port-amd64-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Feb 02 16:38:24 +0000 2020
>Originator:     Emile Heitor
>Release:        netbsd-9
>Organization:
None
>Environment:
Can't have it
>Description:
While trying to install NetBSD 9.0_RC1 to a Dell Latitude 7490, kernel would panic() at intel_backlight_register.
Screenshot available here: https://imil.net/NetBSD/NetBSD_9_RC1_panic.jpg
>How-To-Repeat:
Try to install NetBSD 9.0 RC1 on a Latitude 7490
>Fix:
N/A