Resolve pkg/xsysinfo/gpu.go: keep master's NVIDIAComputeCapability +
parseComputeCap (the #10485 multi-GPU work); re-express our IsNVIDIABlackwell
as a thin wrapper over NVIDIAComputeCapability instead of a duplicate
nvidia-smi probe.
Assisted-by: Claude:opus-4.8 [Claude Code]
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>