Merge tag 'pull-ppc-for-11.1-20260429' of https://gitlab.com/harshpb/qemu into staging

PPC PR for 11.1

* MPIPL support for PowerNV
* ppc/pnv: Add a nest MMU model
* hw/ssi/pnv_spi: Fix fifo8 memory leak on unrealize
* hw/intc/xics: Add a check for an invalid server id

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* tag 'pull-ppc-for-11.1-20260429' of https://gitlab.com/harshpb/qemu:
  hw/intc/xics: Add a check for an invalid server id
  ppc/pnv: Add a nest MMU model
  hw/ssi/pnv_spi: Fix fifo8 memory leak on unrealize
  MAINTAINERS: Add entry for MPIPL (PowerNV)
  tests/functional: Add test for MPIPL in PowerNV
  pnv/mpipl: Enable MPIPL support
  pnv/mpipl: Write the preserved CPU and MDRT state
  pnv/mpipl: Set thread entry size to be allocated by firmware
  pnv/mpipl: Preserve CPU registers after crash
  pnv/mpipl: Preserve memory regions as per MDST/MDDT tables
  ppc/pnv: Handle stash command in PowerNV SBE
  ppc/mpipl: Implement S0 SBE interrupt
  ppc/pnv: Move SBE host doorbell function to top of file

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

diff --cc MAINTAINERS
Simple merge