35c0baa6b7
pc98 case that I missed before. Attempt to get the irq for the PCIC first from the loader env var and second from the config system. I've been able to boot my laptop with a kernel that hardwired the irq to 10. This should allow boot -c to finally start working for pcic irq, but I've not tested that. Add $FreeBSD$ to slot.h.