libnl: update homepage link

The old link is broken. Use the github repo instead.

Cc: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libnl/Config.in

@@ -4,7 +4,7 @@ config BR2_PACKAGE_LIBNL
 	help
 	  A library for applications dealing with netlink socket.
 
-	  http://people.suug.ch/~tgr/libnl/
+	  https://github.com/thom311/libnl
 
 if BR2_PACKAGE_LIBNL