Merge tag 'pull-ppc-for-8.2-20231130' of https://gitlab.com/npiggin/qemu into staging

* Add a default BIOS for the new amigaone machine so it does not
  require out of tree binary blob.
* SLOF update to fix virtio serial bugs.

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# gpg: Signature made Thu 30 Nov 2023 07:27:53 EST
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# gpg: Good signature from "Nicholas Piggin <npiggin@gmail.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 4E43 7DDA 5661 6F43 29B0  A795 67B3 0276 A862 1CAE

* tag 'pull-ppc-for-8.2-20231130' of https://gitlab.com/npiggin/qemu:
  ppc/amigaone: Allow running AmigaOS without firmware image
  pseries: Update SLOF firmware image

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>