Add avtp resp. libavtp PACKAGECONFIG. This allows building them
GStreamer Audio Video Transport Protocol (AVTP) Plugins which rely on
Avnu's libavtp.
(From OE-Core rev: 5c143bfbad46bf68f70f0d6693caf48bea9fda32)
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>