bin/46881: extra "UCode version: ?" output on some archs.

[msaitoh%execsw.org@localhost]

>Number:         46881
>Category:       bin
>Synopsis:       extra "UCode version: ?" output on some archs.
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Aug 31 01:20:00 +0000 2012
>Originator:     SAITOH Masanobu
>Release:        -current
>Organization:
-----------------------------------------------
                SAITOH Masanobu (msaitoh%netbsd.org@localhost)
>Environment:
        tested netbsd-6 (and -current?) on evbarm
Architecture: arm
Machine: evbarm
>Description:
        "cpuctl identify 0" on evbarm shows:

        dreamplug# cpuctl identify 0
        CPU identification not implemented for this architecture.
        cpu0: UCode version: ?

>How-To-Repeat:
        cpuctl identify 0 on evbarm or some archs.
>Fix:
        I think we should not show the microcode version on architectures
        that don't support it (to check ENODEV or something?)