EDAC, ghes: use CPER module handles to locate DIMMs

Hi James,

quoted

For ghes_edac the bank/device is informational, and nothing would go
wrong if the bank/device numbers are the same as another entry. But
the handle is now critical for DIMM lookup, thus pull it out.

Is printing the handle to the kernel log critical?

I'd expect something collecting errors to read from sysfs, not dmesg. I
thought the whole point here was to update the per-dimm counters in sysfs.

No, printing out the handle is not critical. What I meant is because the 
information is critical it would be nice to have it available for debugging 
purpose. Otherwise it would be hard to find the handle if bank/device
is not accurate. 

Thanks,
Fan