[vala] gstreamer: Update to 1.7.90

[Rico Tzschichholz <ricotz src gnome org>]

commit 2f34d7fe9074ea45bc9c3bde5c00d0a53ae2eb2a
Author: Rico Tzschichholz <ricotz ubuntu com>
Date:   Tue Mar 8 16:30:50 2016 +0100

    gstreamer: Update to 1.7.90

 vapi/gstreamer-audio-1.0.vapi |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/vapi/gstreamer-audio-1.0.vapi b/vapi/gstreamer-audio-1.0.vapi
index d7831fa..3fce83f 100644
--- a/vapi/gstreamer-audio-1.0.vapi
+++ b/vapi/gstreamer-audio-1.0.vapi
@@ -515,7 +515,8 @@ namespace Gst {
                [GIR (name = "AudioChannelMixerFlags")]
                public enum ChannelMixerFlags {
                        NONE,
-                       NON_INTERLEAVED,
+                       NON_INTERLEAVED_IN,
+                       NON_INTERLEAVED_OUT,
                        UNPOSITIONED_IN,
                        UNPOSITIONED_OUT
                }