sndio module

Index: audio/meson.build
--- audio/meson.build.orig
+++ audio/meson.build
@@ -17,6 +17,7 @@ foreach m : [
   ['pa', pulse, files('paaudio.c')],
   ['sdl', sdl, files('sdlaudio.c')],
   ['jack', jack, files('jackaudio.c')],
+  ['sndio', sndio, files('sndioaudio.c')],
   ['spice', spice, files('spiceaudio.c')]
 ]
   if m[1].found()
