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Add optional support for UUID property for PCIeDevice.
Tested: Build an image for nvl32-obmc machine with the following patch
cherry picked.
```
1. Align with upstream u-boot dts tree:
https://gerrit.openbmc.org/c/openbmc/openbmc/+/89932
2. mctpd configuration:
https://gerrit.openbmc.org/c/openbmc/openbmc/+/87390
3. Enable nvidia-gpu sensor:
https://gerrit.openbmc.org/c/openbmc/openbmc/+/89933
```
PCIeDevice with Common.UUID published (GPU path):
$ busctl get-property xyz.openbmc_project.GpuSensor \
/xyz/openbmc_project/inventory/Nvidia_GPU_10 \
xyz.openbmc_project.Common.UUID UUID
s "68174e99-daf4-02d1-ba39-4ed2bf8a0f21"
$ curl -sk https://{BMC_IP}/redfish/v1/Systems/system/\
PCIeDevices/Nvidia_GPU_10
{
"@odata.id": "/redfish/v1/Systems/system/PCIeDevices/Nvidia_GPU_10",
"@odata.type": "#PCIeDevice.v1_19_0.PCIeDevice",
"Id": "Nvidia_GPU_10",
"Manufacturer": "NVIDIA",
"Model": "RTXPRO6000BlackwellDC",
"Name": "PCIe Device",
"PartNumber": "900-2G153-0000-000",
"SerialNumber": "1792425045093",
"Status": {
"Health": "OK",
"State": "Enabled"
},
"UUID": "68174e99-daf4-02d1-ba39-4ed2bf8a0f21"
}
PCIeDevice without Common.UUID published (ConnectX path):
$ busctl get-property xyz.openbmc_project.GpuSensor \
/xyz/openbmc_project/inventory/Nvidia_ConnectX_24_PCIe \
xyz.openbmc_project.Common.UUID UUID
Failed to get property UUID on interface
xyz.openbmc_project.Common.UUID: Unknown interface
xyz.openbmc_project.Common.UUID or property UUID.
$ curl -sk https://{BMC_IP}/redfish/v1/Systems/system/\
PCIeDevices/Nvidia_ConnectX_24_PCIe | jq 'has("UUID")'
false
Change-Id: I38cf972f03f0dd0299b708ea8203872c73c8e224
Signed-off-by: JY Voon <jvoon@nvidia.com>
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