Merge tag 'pull-9p-20220501' of https://github.com/cschoenebeck/qemu into staging

Merge tag 'pull-9p-20220501' of https://github.com/cschoenebeck/qemu into staging

9pfs: various fixes

* macOS: Fix recently (in QEMU 7.0) added 9p support for macOS hosts.

* Tests: Fix inode sequencing in 'synth' driver.

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# gpg: Signature made Sun 01 May 2022 06:09:53 AM PDT
# gpg:                using RSA key 96D8D110CF7AF8084F88590134C2B58765A47395
# gpg:                issuer "qemu_oss@crudebyte.com"
# gpg: Good signature from "Christian Schoenebeck <qemu_oss@crudebyte.com>" [unknown]
# 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: ECAB 1A45 4014 1413 BA38  4926 30DB 47C3 A012 D5F4
#      Subkey fingerprint: 96D8 D110 CF7A F808 4F88  5901 34C2 B587 65A4 7395

* tag 'pull-9p-20220501' of https://github.com/cschoenebeck/qemu:
  9pfs: fix qemu_mknodat() to always return -1 on error on macOS host
  9pfs: fix removing non-existent POSIX ACL xattr on macOS host
  9pfs: fix wrong errno being sent to Linux client on macOS host
  9pfs: fix wrong encoding of rdev field in Rgetattr on macOS
  9pfs: fix qemu_mknodat(S_IFSOCK) on macOS
  9pfs: fix qemu_mknodat(S_IFREG) on macOS
  9pfs: fix inode sequencing in 'synth' driver

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