nvidia-gpu: add energy sensor

This commit introduces a energy sensor for the GPU.

Tested: Build an image for gb200nvl-obmc machine with the following
patches cherry picked. This patches are needed

nvidia-gpu: add energy sensor

This commit introduces a energy sensor for the GPU.

Tested: Build an image for gb200nvl-obmc machine with the following
patches cherry picked. This patches are needed to enable the mctp stack.

https://gerrit.openbmc.org/c/openbmc/openbmc/+/79422

```
$ curl -s -k -u 'root:0penBmc' https://10.137.203.137/redfish/v1/Chassis/NVIDIA_GB200_1/Sensors/energy_NVIDIA_GB200_GPU_0_Energy_0
{
"@odata.id": "/redfish/v1/Chassis/NVIDIA_GB200_1/Sensors/energy_NVIDIA_GB200_GPU_0_Energy_0",
"@odata.type": "#Sensor.v1_2_0.Sensor",
"Id": "energy_NVIDIA_GB200_GPU_0_Energy_0",
"Name": "NVIDIA GB200 GPU 0 Energy 0",
"Reading": 269947.856,
"ReadingRangeMax": 1.8446744073709552e+16,
"ReadingRangeMin": 0.0,
"ReadingType": "EnergyJoules",
"ReadingUnits": "J",
"Status": {
"Health": "OK",
"State": "Enabled"
}
}%
```

Change-Id: I6f53ab2a83eedd54005bbdcd781dc8d320d7f26a
Signed-off-by: Harshit Aghera <haghera@nvidia.com>

show more ...