Merge remote-tracking branch 'remotes/mcayland/tags/qemu-sparc-20210908' into staging

qemu-sparc queue

# gpg: Signature made Wed 08 Sep 2021 12:48:40 BST
# gpg:                using RSA key CC621AB98E82200D915CC9C45BC2C56FAE0F321F
# gpg:                issuer "mark.cave-ayland@ilande.co.uk"
# gpg: Good signature from "Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>" [full]
# Primary key fingerprint: CC62 1AB9 8E82 200D 915C  C9C4 5BC2 C56F AE0F 321F

* remotes/mcayland/tags/qemu-sparc-20210908:
  escc: fix STATUS_SYNC bit in R_STATUS register
  escc: re-use escc_reset_chn() for soft reset
  escc: remove register changes from escc_reset_chn()
  escc: implement hard reset as described in the datasheet
  escc: implement soft reset as described in the datasheet
  escc: introduce escc_hard_reset_chn() for hardware reset
  escc: introduce escc_soft_reset_chn() for software reset
  escc: reset register values to zero in escc_reset()
  escc: checkpatch fixes
  sun4m: fix setting CPU id when more than one CPU is present
  tcg: Drop gen_io_end()
  target/sparc: Drop use of gen_io_end()

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