package/matchbox-common: 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-common/Config.in

@@ -5,6 +5,8 @@ config BR2_PACKAGE_MATCHBOX_COMMON
 	help
 	  Common desktop folders and matchbox-session script.
 
+	  http://git.yoctoproject.org/cgit/cgit.cgi/matchbox-common/
+
 config BR2_PACKAGE_MATCHBOX_COMMON_PDA
 	bool "PDA style app folder"
 	depends on BR2_PACKAGE_MATCHBOX_COMMON