Bug 1561945 - P1: Copy sunaudio backend to cubeb. r=achronop

Differential Revision: https://phabricator.services.mozilla.com/D36215

--HG--
extra : moz-landing-system : lando

media/libcubeb/update.sh

@@ -41,6 +41,7 @@ cp $1/src/cubeb_ringbuffer.h src
 cp $1/src/cubeb_sndio.c src
 cp $1/src/cubeb_strings.c src
 cp $1/src/cubeb_strings.h src
+cp $1/src/cubeb_sun.c src
 cp $1/src/cubeb_utils.h src
 cp $1/src/cubeb_utils.cpp src
 cp $1/src/cubeb_utils_unix.h src