port-riscv/60891: boot -d breaks into ddb when symbols are not yet available

["martin%NetBSD.org@localhost via gnats" <gnats-admin%NetBSD.org@localhost>]

>Number:         60891
>Category:       port-riscv
>Synopsis:       boot -d breaks into ddb when symbols are not yet available
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    port-riscv-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Oct 16 18:20:01 +0000 2026
>Originator:     Martin Husemann
>Release:        NetBSD 11.99.9
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD 11.99.9 (GENERIC64) #7: Fri Oct 16 14:19:11 CEST 2026
	martin%seven-days-to-the-wolves.aprisoft.de@localhost:/work/src/sys/arch/riscv/compile/GENERIC64
Architecture: riscv64
Machine: riscv
>Description:

Booting with "boot /netbsd -d" drops into ddb too early - the kernel symbols
are not yet available

>How-To-Repeat:
s/a

>Fix:
n/a