A number of fixes:
- oem-amd-nonfree-fw no longer exists from c6306cb9b, and the fw here is
pretty much required for the device to be useful so it's added to
"depends=".
- drops the -vulkan subpackage since oem-amd-vulkan is doing the same
thing.
- force rootfs partition resize on boot, else the rootfs is too small
- disable unudhcpd, usb networking isn't working, and we don't need to
run it on any dedicated eth device
- use kernel with Valve's out of tree patches, to improve stability /
usefulness of device
fixes#2630
[ci:skip-build] already built successfully in CI
