buildroot

opus: security bump to 1.1.4

Fixes CVE-2017-0381: A remote code execution vulnerability in
silk/NLSF_stabilize.c in libopus in Mediaserver could enable an attacker
using a specially crafted file to cause memory corruption during media file
and data processing.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
(cherry picked from commit f00a528ce68e24bb9f162416a5cf25bdc65fce20)