Version 0.03 of wdt977.c - Changes that were made are:
* Extract the stop code in a seperate function (wdt977_stop)
* Extract the start code in a seperate function (wdt977_start)
* Rename kick_wdog to wdt977_keepalive for consistency
* Extract the watchdog's status code to a seperate function (wdt977_get_status)
* Change the way we deal with the watchdog timeout:
   Up till now we used timeoutM (in minutes) as the correct value and then
   calculated timeout as being timeoutM*60 or *timeoutM*120 (depending on
   wether or not we have the netwinder hardware bug).

   From now on timeout is the correct value and we calculate timeoutM out
   of it. Because of this we start with checking wether or not we have a
   correct timeout value (if not we reset it to the default value) and we
   automatically calculate timeoutM. Each time we change timeout with a
   correct timeout value, we recalculate timeoutM.
* Extended ioctl code with WDIOC_SETOPTIONS and updated the watchdog_info structure
* Added notifier support

Code has been tested by Woody