channel-playback: support SPICE_MSG_PLAYBACK_LATENCY

Add a new property for minimum playback latency. This property is
updated with the value from SPICE_MSG_PLAYBACK_LATENCY.
I also increased the default latency from 100ms to 200ms in order to
be more robust to different bandwidth settings.
The patch also updates spice-common submodule.

1 files changed, 0 insertions, 0 deletions

diff --git a/spice-common b/spice-common
-Subproject 7cdf8de00a573b6bdb4ec4582c87aa79b25796d
+Subproject 30e84783cad7a5d4cd345367a267cafbfd0571a