port-xen/52180: Intel 8259x missing from XEN3_DOM0 config

[waddell%caravaninfotech.com@localhost]

>Number:         52180
>Category:       port-xen
>Synopsis:       Intel 8259x missing from XEN3_DOM0 config
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    port-xen-maintainer
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 19 22:40:00 +0000 2017
>Originator:     Harry Waddell
>Release:        netbsd-7
>Organization:
Caravan Electronic Publishing
>Environment:
NetBSD xen-12.pbspro.com 7.1_STABLE NetBSD 7.1_STABLE (XEN3_DOM0_10G) #0: Tue Apr 18 18:50:50 PDT 2017  root%xen-12.pbspro.com@localhost:/usr/obj/sys/arch/amd64/compile.amd64/XEN3_DOM0_10G amd64
>Description:
This is in sys/arch/amd64/conf/GENERIC

ixg*    at pci? dev ? function ?        # Intel 8259x 10 gigabit

but not in sys/arch/amd64/conf/XEN3_DOMO

as a result, booting a netbsd-7 branch XEN3_DOM0 kernel results in loss of connectivity on systems with intel 10G nics. These nics seem to be the  default on newer supermicro servers ( e.g. E5-* v4 ), so this trivial change should ideally be made ASAP.




>How-To-Repeat:
boot XEN netbsd-7 on newer supermicro servers. 
>Fix:
see description