[ofw] ib-diags: compatability issue with ibstat

[Hefty, Sean]

> 	1. Remove ibstat and use ibv_devinfo instead
> 	2. Change ibstat to obtain the fdr10 information using ibverbs
> 	3. Move the is_fdr10 functionality into OS specific files or code
> sections of ibstat
> 	4. Change ibstat to obtain fdr10 data using MADs or some other OS
> independent mechanism
> 	5. Change ibumad so that it provides the fdr10 data
> 	  Note: umad has OS dependent implementation anyway, but the windows
> umad would
> 	        depend on the data being available from ibverbs
> 	6. ???
> 
> 	Can someone explain why the information can't come from the
> umad_port::rate field?
> 
> 
> Because fdr10 is non standard, there's no rate for this; it overloads QDR
> based rates as both are 10 Gbps but have different link encodings.

Ok, then for choices 6-8:

6. Have ibstat just report the rate without specifying the link encoding
7. Use umad_port:rate to encode the rate, link encoding, inter-packet delay, etc.
   (I'm only partially kidding here.)
8. Drop ibstat from windows.  Windows users will be directed to use ibv_devinfo.

Ira, what are your thoughts on this?