package: add om-watchdog package

om2p-watchdog package is OM2P specific. However a similar watchdog
mechanism exists on OM1P as well. This new package wants to substitute
om2p-watchdog with a new one which is suitable either for OM1P and OM2P.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>

SVN-Revision: 29647