LCDproc patch for Watchdog timer on ATX Enabled 635, 633, and 631

[CF_rje]

Greetings,

I've written a patch that we're using on our Linux servers to use the
watchdog timer on the CF-633 displays (it also works on the 635 and
631).

This patch adds a configuration option to the CFontzPacket driver
called "Watchdog" which is a value, 0-255 seconds, that represents how
long until the Watchdog will timeout. For those modules configured
for ATX power switch use, they will reset the host system if the
watchdog isn't reset or disabled before the timeout.

The patch is attached. We hope its useful to many and finds its way
into LCDproc.

Rob Emanuele