vfio/nvgrace-gpu: Add GB200 SKU to the devid table

NVIDIA is productizing the new Grace Blackwell superchip
SKU bearing device ID 0x2941.

Add the SKU devid to nvgrace_gpu_vfio_pci_table.

CC: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Ankit Agrawal <ankita@nvidia.com>
Link: https://lore.kernel.org/r/20250124183102.3976-5-ankita@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>