package/gcr: fix introspection option

introspection option was wrongly named --with-introspection instead of
--enable-introspection since commit
d4e7c720aa78dbe659db82f4eb38ff58ebae4c57:

configure: WARNING: unrecognized options: --disable-doc, --disable-docs, --disable-documentation, --with-xmlto, --with-fop, --enable-ipv6, --with-introspection

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/gcr/gcr.mk

@@ -25,9 +25,9 @@ GCR_LICENSE_FILES = COPYING
 
 ifeq ($(BR2_PACKAGE_GOBJECT_INTROSPECTION),y)
 GCR_DEPENDENCIES += gobject-introspection host-libxslt
-GCR_CONF_OPTS += --with-introspection
+GCR_CONF_OPTS += --enable-introspection
 else
-GCR_CONF_OPTS += --without-introspection
+GCR_CONF_OPTS += --disable-introspection
 endif
 
 # Only the X11 backend is supported for the simple GUI