package/mpv: fix reproducible build issues

Do not include the build date when creating reproducible builds.

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 083b48194fc7d46278bb6c33355322bf02eaec47)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/mpv/mpv.mk

@@ -28,6 +28,10 @@ MPV_CONF_OPTS = \
 	--disable-uchardet \
 	--disable-vapoursynth
 
+ifeq ($(BR2_REPRODUCIBLE),y)
+MPV_CONF_OPTS += --disable-build-date
+endif
+
 ifeq ($(BR2_STATIC_LIBS),y)
 MPV_CONF_OPTS += --disable-libmpv-shared --enable-libmpv-static
 else