Merge tag 'pull-ppc-20220728' of https://gitlab.com/danielhb/qemu into staging

Merge tag 'pull-ppc-20220728' of https://gitlab.com/danielhb/qemu into staging

ppc patch queue for 2022-07-28:

Short queue with 2 Coverity fixes and one fix of the
'wait' insns that is causing hangs if the guest kernel uses
the most up to date wait opcode.

- target/ppc:
  - implement new wait variants to fix guest hang when using the new opcode
- ppc440_uc: initialize length passed to cpu_physical_memory_map()
- spapr_nvdimm: check if spapr_drc_index() returns NULL

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* tag 'pull-ppc-20220728' of https://gitlab.com/danielhb/qemu:
  target/ppc: Implement new wait variants
  hw/ppc/ppc440_uc: Initialize length passed to cpu_physical_memory_map()
  hw/ppc: check if spapr_drc_index() returns NULL in spapr_nvdimm.c

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