introduce use of card preferred sample rate, usefull for IOS to speed-up call estbali...

[linphone] / mediastreamer2

diff --git a/mediastreamer2 b/mediastreamer2
index d1e3505352c469f91333f65e43cda48560b26a91..3e43a499150a684eef2d775e3fe8ff4ddf72b769 160000 (submodule)
--- a/mediastreamer2
+++ b/mediastreamer2
@@ -1 +1 @@
-Subproject commit d1e3505352c469f91333f65e43cda48560b26a91
+Subproject commit 3e43a499150a684eef2d775e3fe8ff4ddf72b769