Merge tag 'pull-ppc-20220404' of https://github.com/legoater/qemu into staging

ppc-7.0 queue:

* Coverity fixes
* Fix for a memory leak issue

# gpg: Signature made Mon 04 Apr 2022 09:45:51 BST
# gpg:                using RSA key A0F66548F04895EBFE6B0B6051A343C7CFFBECA1
# gpg: Good signature from "Cédric Le Goater <clg@kaod.org>" [undefined]
# 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: A0F6 6548 F048 95EB FE6B  0B60 51A3 43C7 CFFB ECA1

* tag 'pull-ppc-20220404' of https://github.com/legoater/qemu:
  linux-user/ppc: Narrow type of ccr in save_user_regs
  ppc/pnv: Fix number of registers in the PCIe controller on POWER9
  hw/ppc: free env->tb_env in spapr_unrealize_vcpu()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>