Update sources URL (raring -> saucy)

Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
diff --git a/hwpacks/linaro-midway b/hwpacks/linaro-midway
index 5e5bc4a..d052203 100644
--- a/hwpacks/linaro-midway
+++ b/hwpacks/linaro-midway
@@ -33,9 +33,9 @@
 packages:
 - linux-image-linaro-midway
 - linux-headers-linaro-midway
-- uboot-mkimage
+- u-boot-tools
 wired_interfaces:
 - eth0
 sources:
-  linaro: http://ppa.launchpad.net/linaro-maintainers/overlay/ubuntu raring main
-  ubuntu: http://ports.ubuntu.com/ubuntu-ports raring main universe
+  linaro: http://ppa.launchpad.net/linaro-maintainers/overlay/ubuntu saucy main
+  ubuntu: http://ports.ubuntu.com/ubuntu-ports saucy main universe