Merge remote-tracking branch 'remotes/kraxel/tags/audio-20180625-pull-request' into staging

audio: new timer code for hda codec, fix audio_get_conf_int

# gpg: Signature made Mon 25 Jun 2018 14:12:41 BST
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/audio-20180625-pull-request:
  audio: Convert use of atoi to qemu_strtoi
  audio/hda: enable new timer code by default.
  audio/hda: detect output buffer overruns
  audio/hda: tweak timer adjust logic
  audio/hda: turn some dprintfs into trace points
  audio/hda: create millisecond timers that handle IO

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