package/json-glib: set -Dintrospection=false

When -Dintrospection=false is not passed, the meson script
auto-detects the host g-ir-scanner, which is not usable in a
cross-compile environment.

Signed-off-by: Alex Xu <alex_y_xu@yahoo.ca>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/json-glib/json-glib.mk

@@ -17,6 +17,8 @@ JSON_GLIB_DEPENDENCIES = \
 	host-pkgconf \
 	libglib2
 
+JSON_GLIB_CONF_OPTS = -Dintrospection=false
+
 JSON_GLIB_LDFLAGS = $(TARGET_LDFLAGS) $(TARGET_NLS_LIBS)
 
 $(eval $(meson-package))