package/gstreamer1/gstreamer1-editing-services: disable introspection

Disable introspection as it raises a build failure with autotools.
It could be enabled after bumping to upcoming 1.18.x and switching to
messon. We can't switch now as version 1.16.2 don't allow to disable
examples/tools through meson

Fixes:
 - http://autobuild.buildroot.org/results/36eb875fba2847b32df05f31d8f8ca9f0ecde36f

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit cc88590b49848a474088a17189e1b83f8a683a07)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gstreamer1/gstreamer1-editing-services/gstreamer1-editing-services.mk

@@ -18,7 +18,9 @@ GSTREAMER1_EDITING_SERVICES_DEPENDENCIES = \
 	$(if $(BR2_PACKAGE_GST1_VALIDATE),gst1-validate) \
 	libxml2
 
-GSTREAMER1_EDITING_SERVICES_CONF_OPTS = --disable-benchmarks
+GSTREAMER1_EDITING_SERVICES_CONF_OPTS = \
+	--disable-benchmarks \
+	--disable-introspection
 
 # examples need GTK2/3 with X11 backend
 ifneq ($(BR2_PACKAGE_LIBGTK2)$(BR2_PACKAGE_LIBGTK3_X11),)