Merge tag 'pull-request-2025-07-11' of https://gitlab.com/thuth/qemu into staging

* s390x: Allow to select different entries when booting via pxelinux.cfg
* Link s390-ccw.img statically
* Fix broken bamboo functional test
* s390x code cleanups and refactorings

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# gpg: Signature made Fri 11 Jul 2025 05:32:29 EDT
# gpg:                using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
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# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* tag 'pull-request-2025-07-11' of https://gitlab.com/thuth/qemu:
  target/s390x: Have s390_cpu_halt() not return anything
  target/s390x: Expose s390_count_running_cpus() method
  target/s390x: Remove unused s390_cpu_[un]halt() user stubs
  tests/functional/test_ppc_bamboo: Replace broken link with working assets
  tests/functional: Add dependency to the keymap_targets
  pc-bios: Update the s390 bios images with the pxelinux.cfg loadparm changes
  pc-bios/s390-ccw: link statically
  tests/functional: Add a test for s390x pxelinux.cfg network booting
  pc-bios/s390-ccw: Add a boot menu for booting via pxelinux.cfg
  pc-bios/s390-ccw: Make get_boot_index() from menu.c global
  pc-bios/s390-ccw: Allow up to 31 entries for pxelinux.cfg
  pc-bios/s390-ccw: Allow to select a different pxelinux.cfg entry via loadparm
  hw/s390x/s390-pci-bus.c: Use g_assert_not_reached() in functions taking an ett
  target/s390x/tcg: Use vaddr in s390_probe_access()
  target/s390x/kvm: Use vaddr in find/insert_hw_breakpoint()

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