Update sources URL (quantal -> raring)

Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
diff --git a/hwpacks/linaro-highbank b/hwpacks/linaro-highbank
index 8b0dbe0..afd942e 100644
--- a/hwpacks/linaro-highbank
+++ b/hwpacks/linaro-highbank
@@ -34,5 +34,5 @@
 wired_interfaces:
 - eth0
 sources:
-  linaro: http://ppa.launchpad.net/linaro-maintainers/overlay/ubuntu quantal main
-  ubuntu: http://ports.ubuntu.com/ubuntu-ports quantal main universe
+  linaro: http://ppa.launchpad.net/linaro-maintainers/overlay/ubuntu raring main
+  ubuntu: http://ports.ubuntu.com/ubuntu-ports raring main universe