* Enable external libav for better optimisations/additional bugfixes
(internal ffmpeg copy is quite old), default enabled but can be
disabled using PACKAGECONFIG
* Add a PACKAGECONFIG for orc, disabled by default in line with other
gstreamer recipes
* Bump PR to r7 so the bbappend can be dropped without PR going
backwards
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com> Signed-off-by: Saul Wold <sgw@linux.intel.com>