package/vlc: add optional dependency to libvpx

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/vlc/vlc.mk

@@ -56,7 +56,6 @@ VLC_CONF_OPTS += \
 	--disable-shout \
 	--disable-twolame \
 	--disable-vdpau \
-	--disable-vpx \
 	--disable-vsxu \
 	--disable-x262 \
 	--disable-zvbi \
@@ -308,6 +307,13 @@ else
 VLC_CONF_OPTS += --disable-v4l2
 endif
 
+ifeq ($(BR2_PACKAGE_LIBVPX),y)
+VLC_CONF_OPTS += --enable-vpx
+VLC_DEPENDENCIES += libvpx
+else
+VLC_CONF_OPTS += --disable-vpx
+endif
+
 ifeq ($(BR2_PACKAGE_LIBXCB),y)
 VLC_CONF_OPTS += --enable-xcb
 VLC_DEPENDENCIES += libxcb