package/matchbox-fakekey: add an upstream URL to Config.in

Add an upstream URL to the help text in Config.in. This
addresses the 'Missing' URL status in the package stats
web page output.

Signed-off-by: Mark Corbin <mark@dibsco.co.uk>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/matchbox-fakekey/Config.in

@@ -4,3 +4,5 @@ config BR2_PACKAGE_MATCHBOX_FAKEKEY
 	select BR2_PACKAGE_XLIB_LIBXTST
 	help
 	  Library for simulating key press events under X11.
+
+	  http://git.yoctoproject.org/cgit/cgit.cgi/libfakekey/