Merge remote-tracking branch 'remotes/aurel/tags/pull-target-mips-20170717' into...

Merge remote-tracking branch 'remotes/aurel/tags/pull-target-mips-20170717' into staging

Queued target/mips patches

# gpg: Signature made Mon 17 Jul 2017 15:50:27 BST
# gpg:                using RSA key 0xBA9C78061DDD8C9B
# gpg: Good signature from "Aurelien Jarno <aurelien@aurel32.net>"
# gpg:                 aka "Aurelien Jarno <aurelien@jarno.fr>"
# gpg:                 aka "Aurelien Jarno <aurel32@debian.org>"
# 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: 7746 2642 A9EF 94FD 0F77  196D BA9C 7806 1DDD 8C9B

* remotes/aurel/tags/pull-target-mips-20170717:
  target/mips: optimize WSBH, DSBH and DSHD
  mips: set CP0 Debug DExcCode for SDBBP instruction

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