glinterop_cvpx: add frameworks on tvOS

Otherwise, the OpenGL interop doesn't link on tvOS when creating dynamic
plugins (--enable-shared option from build.sh).

modules/video_output/Makefile.am

@@ -52,10 +52,13 @@ libglinterop_cvpx_plugin_la_LDFLAGS += -Wl,-framework,IOSurface,-framework,OpenG
 vout_LTLIBRARIES += libvout_macosx_plugin.la libcaopengllayer_plugin.la \
 	libglinterop_cvpx_plugin.la
 endif
-if HAVE_IOS
+
+if HAVE_DARWIN
+if !HAVE_OSX
 libglinterop_cvpx_plugin_la_CPPFLAGS += -DUSE_OPENGL_ES2
 libglinterop_cvpx_plugin_la_LDFLAGS += -Wl,-framework,IOSurface,-framework,OpenGLES
 endif
+endif
 
 libvout_ios_plugin_la_SOURCES = video_output/opengl/display.c
 libvout_ios_plugin_la_CFLAGS = $(AM_CFLAGS) $(OPENGL_COMMONCFLAGS) -DUSE_OPENGL_ES2