QEMU commit 0a923be2f642 broke my or1k image.

[Rob Landley]

Grab this tarball, extract it, and ./run-qemu.sh. It's a simple
linux+initramfs image that boots to a shell prompt.

  https://landley.net/bin/mkroot/latest/or1k.tgz

QEMU 7.0.0 ran that linux-or1k image, but newer qemu does not. I besected the
issue to qemu commit 0a923be2f642, and it's still broken in current tip of tree.

Rebuilding the image with current linux-git doesn't seem to make a difference?
Either way I get serial output with old qemu and don't with current qemu.

Rob

P.S. Reproduction sequence for the tarball available upon request, kernel config
is in the docs/ directory, userspace is just a toybox mkroot build but "not
getting kernel boot messages" happens way before userspace gets a vote.