Staging: batman-adv: Lower resolution for timeouts

It is enough for our timeouts to keep them in seconds instead of miliseconds.
With a too high resolution, we might even risk an integer overflow, so this
patch should make things more safe.

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Sven Eckelmann <sven.eckelmann@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>