Merge tag 'pull-request-2025-10-21' of https://gitlab.com/thuth/qemu into staging

- Add a missing QAPI event + functional test for the CPI feature on s390x
- Remove the obsolete s390-ccw-virtio-4.2 machine type
- 2nd try to fix the slow cache up/download in the MSYS2 CI job

# -----BEGIN PGP SIGNATURE-----
#
# iQJFBAABCgAvFiEEJ7iIR+7gJQEY8+q5LtnXdP5wLbUFAmj3kIkRHHRodXRoQHJl
# ZGhhdC5jb20ACgkQLtnXdP5wLbW4ZBAAlEulDcBvKukbIWyPcHNN3KLEk0YXRA9S
# Mj7dZ/4rLTvjpHt+y5NaZ+lkzzIPJF3KD6D8Y//no1ik911tCOSaJQLu9ByJHVk4
# EKdEw1LGFYNcpnAP2XAExrwjtB98/YqSqaKB5K5d3jJ/6MQSGHygdTB4OL19Nevt
# tfTxXMBYjze+/Wvkt9bF4gAv6VyQ0XAhzRT1xYcWmrtT0wRhNrl6zG+1GgHWtnhM
# AJbO6PwTsNdsmeRjNCDlamevdAXO44chZJXOEHkIQcfj9enuJyZnmdWH3E7NGjk+
# pTh89u1N+0AERc9DuQIMzYRKb2lgCi8v1xWjJMc/c9dgi7+sJOs7O1m4ySKuGxg0
# +0Czn6Q8tYqywl2i9DmdTqC+l3g4H/5M9xBQtMmLbLNRxXniDCXRedRBTWAUfh29
# K1lL0vL3oz/2oZLE3/SieQdxHP51LsbJGwu1o96T/HvPnaOkzF6c7PRIjuKyqAbR
# 5qKhsQMCRqKx6kK4AxnmQ123hnZADpZXWTK9T59xHKwJ595JN7nWAWn3THq4XlPF
# 5rkFTIUEkNIWhS92XNyy165tvXw2cz66J3ud/A006p0OzO3Kow3863TNAQI/wFNR
# xDGFNjzNp/8YpXMfsgQZ3oB7iEpK5zliosd61sxqGUcd33w8kMHaKeWwly2Mroy2
# eS1dHAHdSrg=
# =pnHC
# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 21 Oct 2025 08:54:17 AM CDT
# gpg:                using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg:                issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [unknown]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [unknown]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* tag 'pull-request-2025-10-21' of https://gitlab.com/thuth/qemu:
  gitlab-ci: Decrease the size of the compiler cache
  hw/core/machine: Remove MachineClass::fixup_ram_size callback
  hw/s390x/ccw: Remove SCLPDevice::increment_size field
  hw/s390x/ccw: Remove deprecated s390-ccw-virtio-4.2 machine
  tests/functional: add tests for SCLP event CPI
  qapi/machine-s390x: add QAPI event SCLP_CPI_INFO_AVAILABLE

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>