The ASUS WL-520gU and some other similar Asus devices have a BCM5354
running at 200MHZ and not at 240 which is the default for this SoC.
This fixes#4083.
SVN-Revision: 34325
In the old configuration the SoC issued a reboot if the watchdog was
killed also if it was kill with TERM and not KILL.
This will fix#11724.
SVN-Revision: 34324