Trace xbus/abus units properly in SCAN trace
Trace xbus/abus units properly in SCAN trace

The HWPF Platform's implementation of fapi::Target::toString needs to
be expanded to cope with xbus/abus targets, currently, it just prints p8

Change-Id: Ibac1506b9a03b44ebee7c837a5e08aa5321ab4ab
RTC: 68686
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/3945
Tested-by: Jenkins Server
Reviewed-by: Brian H. Horton <4d3586b959590a6e034649b5cc7435fb7d9ba30c@linux.ibm.com>
Reviewed-by: Daniel M. Crowell <912029ca9254ac7b5854e56910561d682e1fa2d0@us.ibm.com>
Reviewed-by: A. Patrick Williams III <c87e37b1a4035affd737b461af89fb722d635f4d@us.ibm.com>

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