PR#61320 support for ICH5 on-board fxp

[M. Warner Losh]

In message: <55F5FD04-8873-11D8-AB20-000393496BE8 at lassitu.de>
            Stefan Bethke <stb at lassitu.de> writes:
: may I direct some committers' attention to this PR? I just got four 
: excellent Tyan Tomcat i875P (with serial console redirection!), and 
: would prefer not to have to patch the source when 5.3 comes along...

I've committed this.

Warner