Move netronome firmware to a dedicated sub package
    
    The netronome firmware currently equates to around 100Mb which is about
    25% of the current total size of the actual firmware in linux-firmware.
    It's also increasing in size overall quite a bit. Being a high end
    Smart NIC that is basically a linux instance to offload eBPF to the NIC
    itself it also has quite a small user base.