watchdog: imgpdc: Allow timeout to be set in device-tree
Since the heartbeat is statically initialized to its default value,
watchdog_init_timeout() will never look in the device-tree for a
timeout-sec value. Instead of statically initializing heartbeat,
fall back to the default timeout value if watchdog_init_timeout()
fails.
Signed-off-by: Andrew Bresticker <abrestic@chromium.org> Reviewed-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com> Tested-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com> Cc: James Hogan <james.hogan@imgtec.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>