kern/39468: Incomplete device_t/softc split for the ld(4) attachments

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>Number:         39468
>Category:       kern
>Synopsis:       Incomplete device_t/softc split for the ld(4) attachments
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Sep 06 11:25:00 +0000 2008
>Originator:     Juan RP
>Release:        Latest
>Organization:
>Environment:
NetBSD vmware-netbsd 4.99.72 NetBSD 4.99.72 (MASTER) #2: Sat Sep  6 13:03:36 
CEST 2008  juan@vmware-netbsd:/home/juan/build/obj/sys/arch/i386/compile/MASTER 
i386
>Description:
The ld(4) driver will crash at attach time with a NULL pointer dereference due 
to incomplete device_t/softc split for all its attachments (note that I'm 
responsible for ataraid(4) crash :-).

I created a patch that will change all ld(4) users to switch to 
CFATTACH_DECL_NEW. The patch has been tested with ataraid(4), I'd like to hear 
if there's any problem in the other attachments, as well as someone testing 
them to verify.

Will send a patch to this PR in a few minutes. This patch will supersede the 
one from kern/39394.
>How-To-Repeat:

>Fix: