mplayer: add optional vorbis dependency

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/multimedia/mplayer/mplayer.mk

@@ -72,6 +72,11 @@ MPLAYER_DEPENDENCIES += tremor
 MPLAYER_CONF_OPTS += --disable-tremor-internal --enable-tremor
 endif
 
+ifeq ($(BR2_PACKAGE_LIBVORBIS),y)
+MPLAYER_DEPENDENCIES += libvorbis
+MPLAYER_CONF_OPTS += --enable-libvorbis
+endif
+
 ifeq ($(BR2_PACKAGE_LIBMAD),y)
 MPLAYER_DEPENDENCIES += libmad
 else