port-evbarm/40307: options KGDB doesn't work for some evbarm hosts

[lloyd%must-have-coffee.gen.nz@localhost]

>Number:         40307
>Category:       port-evbarm
>Synopsis:       options KGDB doesn't work for some evbarm hosts
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    port-evbarm-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Dec 31 04:30:00 +0000 2008
>Originator:     Lloyd Parkes
>Release:        5.99.5
>Organization:
Must Have Coffee
>Environment:
NetBSD 5.99.5 (TS7200_SMALL) #5: Wed Dec 31 16:39:40 NZDT 2008 
lloyd%maro.must-have-coffee.gen.nz@localhost:/vol/scratch/obj/evbarm/sys/arch/evbarm/compile/TS7200_SMALL
>Description:
The kernel GDB option doesn't work on a TS-7200. It isn't fully implemented and 
what is implemented appears to be wrong.
>How-To-Repeat:
Use "options KGDB"
>Fix:
Please see the diffs at http://www.must-have-coffee.gen.nz/kgdb.diff.

These patches add KGDB support for the serial ports on a Cirrus EP9302. I've 
also added the necessary attachment code to tsarm_machdep.c because that's what 
I have. I suspect that a similar change can be made to armadillo9_machdep.c 
without any risk.