qemu: host qemu 9.0.0 breaks e9 logging

[ElectrodeYT]

When not using the host-qemu tool (aka. running host QEMU), at least on Arch, the following warnings also appear:

(venv) [alexander@alex-computer build]$ xbstrap run qemu
xbstrap: Running the following plan:
    run            qemu
xbstrap: run qemu [1/1]
xbstrap: Running ['@SOURCE_ROOT@/scripts/vm-util.py', 'qemu', '--arch', '@OPTION:arch@'] (tools: [])
qemu-system-x86_64: warning: hub port hub0port0 has no peer
qemu-system-x86_64: warning: netdev net0 has no peer
qemu-system-x86_64: warning: netdev hub0port0 has no peer
qemu-system-x86_64: warning: requested NIC (#net033, model ?) was not created (not supported by this machine?)
QEMU does not support virtio-net-pci NICs

E9 debug output is also broken. When using the host-qemu tool (aka qemu 8.1.4), everything works fine.