Add support to get GPU CPER records

[rsrikanth86]

root@100bd78b062d:/# gpuctl show gpu cper-records --json
[
  {
    "GPU": "a8ff74a1-0000-1000-807e-843c9b9a1d73",
    "CPEREntry": [
      {
        "RecordId": "7:1",
        "Severity": 2,
        "Revision": 256,
        "Timestamp": "2025-09-12 15:00:27",
        "CreatorId": "amdgpu",
        "NotificationType": 3,
        "AFId": [
          30
        ]
      }
    ]
  }
]
root@100bd78b062d:/# gpuctl show gpu cper-records       
------------------------------------------------------------------------------------------------------------------------------------------------------------
Timestamp           GPU                                     RecordId        Severity                 Revision  CreatorId NtfnType       AMDFieldId
------------------------------------------------------------------------------------------------------------------------------------------------------------
2025-09-12 15:00:27 a8ff74a1-0000-1000-807e-843c9b9a1d73    7:1             FATAL                    256       amdgpu    MCE            30