linux: Suggest add Google Cloud Platform gve driver
https://cloud.google.com/compute/docs/networking/using-gvnic
https://github.com/torvalds/linux/tree/master/drivers/net/ethernet/google/gve
Amazon ena driver is already in Alpine kernel.
To be fair, we should add Google Cloud Platform gve driver as well.
Also please add to netboot initramfs, then we could boot Alpine in GCP