configure: Add a dependency for the audiotoolbox outdev

The audiotoolbox outdev uses APIs that only are available on macOS,
not on iOS or tvOS. Check for them in configure, and make sure the
outdev is disabled otherwise.

This allows building for iOS without explicitly having to disable
the audiotoolbox outdev.

Signed-off-by: Martin Storsjö <martin@martin.st>

configure

@@ -3741,7 +3741,7 @@ alsa_outdev_deps="alsa"
 avfoundation_indev_deps="avfoundation corevideo coremedia pthreads"
 avfoundation_indev_suggest="coregraphics applicationservices"
 avfoundation_indev_extralibs="-framework Foundation"
-audiotoolbox_outdev_deps="audiotoolbox pthreads"
+audiotoolbox_outdev_deps="audiotoolbox pthreads AudioObjectPropertyAddress"
 audiotoolbox_outdev_extralibs="-framework AudioToolbox -framework CoreAudio"
 caca_outdev_deps="libcaca"
 decklink_deps_any="libdl LoadLibrary"
@@ -6727,6 +6727,10 @@ check_apple_framework CoreMedia
 check_apple_framework CoreVideo
 check_apple_framework CoreAudio
 
+enabled audiotoolbox && {
+    check_type AudioToolbox/AudioToolbox.h AudioObjectPropertyAddress
+}
+
 enabled avfoundation && {
     disable coregraphics applicationservices
     check_lib coregraphics        CoreGraphics/CoreGraphics.h               CGGetActiveDisplayList "-framework CoreGraphics" ||