libpdbg: Add On Chip Controller (OCC) hardware unit

OCC is not in hardware unit list as it is not guardable. But, when a proc is guarded OCC is deconfigured by association. Currently we are not seeing OCC in Nag Dump because of unavailable properties like "name" and "class". So, Adding OCC to hardware unit list.

Test Results:

Before:

OCC was not showing up in Nag Dump.

After:

root@p10bmc:/tmp/test# faultlog -f
<6> faultlog app to collect deconfig/guard records details <6> Latest chassis poweron time read is :03/20/2024 15:33:49 [
  {
    "SYSTEM": {
      "SYSTEM_TYPE": "9105-42A"
    }
  },
  {
    "POLICY": {
      "FCO_VALUE": 0,
      "MASTER": true,
      "PREDICTIVE": true
    }
  },
  {
    "MANUAL_ISOLATION": {
      "CURRENT_STATE": "DECONFIGURED",
      "LOCATION_CODE": "Ufcs-P0-C15",
      "PHYS_PATH": "physical:sys-0/node-0/proc-1",
      "REASON_DESCRIPTION": "MANUAL",
      "TYPE": "Processor Module"
    }
  },
  {
    "DECONFIGURED": {
      "CURRENT_STATE": "DECONFIGURED",
      "LOCATION_CODE": "Ufcs-P0-C15",
      "PHYS_PATH": "physical:sys-0/node-0/proc-1/nx-0",
      "PLID": 0,
      "REASON_DESCRIPTION": "MANUAL",
      "TYPE": "POWER10 Nest Accelerator unit"
    }
  },
  {
    "DECONFIGURED": {
      "CURRENT_STATE": "DECONFIGURED",
      "LOCATION_CODE": "Ufcs-P0-C15",
      "PHYS_PATH": "physical:sys-0/node-0/proc-1/occ-0",  --> OCC is added now
      "PLID": 0,
      "REASON_DESCRIPTION": "MANUAL",
      "TYPE": "POWER10 On Chip Controller"
    }
  },

Change-Id: I5930cc4135b1573e56e9ea6a1967a69632e59e20

open-power / pdbg

libpdbg: Add On Chip Controller (OCC) hardware unit #91