Add timeout to ipconfig call

Signed-off-by: David Thurstenson <thurstylark@gmail.com>

archiso/initcpio/hooks/archiso_pxe_common

@@ -26,7 +26,7 @@ run_hook () {
         fi
 
         # setup network and save some values
-        if ! ipconfig "ip=${ip}"; then
+        if ! ipconfig -t 20 "ip=${ip}"; then
                 echo "ERROR; Failed to configure network"
                 echo "   Falling back to interactive prompt"
                 echo "   You can try to fix the problem manually, log out when you are finished"