Make gard display show that a record is cleared
Make gard display show that a record is cleared

When clearing gard records, Hostboot only modifies the record_id
portion to be 0xFFFFFFFF.  The remainder of the entry remains.
Without this change it can be confusing to users to know that
the record they are looking at is no longer valid.

open-power/skiboot,legoater/skiboot,stewart-ibm/skiboot,qemu/skiboot,open-power/skiboot,shenki/skiboot,qemu/skiboot,legoater/skiboot,qemu/skiboot,legoater/skiboot,shenki/skiboot,qemu/skiboot,qemu/skiboot,open-power/skiboot,stewart-ibm/skiboot,shenki/skiboot,legoater/skiboot,open-power/skiboot,stewart-ibm/skiboot,open-power/skiboot,shenki/skiboot,legoater/skiboot,shenki/skiboot