move vp8 mime type from: VP8-DRAFT-0-3-2 to VP8

[linphone] / mediastreamer2

diff --git a/mediastreamer2 b/mediastreamer2
index a9c4b3e4a427c991c0abe4670cf39ffcbb231995..6250d36e495862f52d36a29e6f53994a16bffc77 160000 (submodule)
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit a9c4b3e4a427c991c0abe4670cf39ffcbb231995
+Subproject commit 6250d36e495862f52d36a29e6f53994a16bffc77