do no try to look for SMBIOS structures on S/390 systems


git-svn-id: http://ezix.org/source/packages/lshw/development@2547 811e2811-9fd9-0310-a116-b6e8ac943c8b
assume we have an SMP-capable systems whenever several processors are online


git-svn-id: http://ezix.org/source/packages/lshw/development@2548 811e2811-9fd9-0310-a116-b6e8ac943c8b