Wakeup watchdog thread when watchdog option is changed (Especially, in timeout change)

Wakeup watchdog thread when watchdog option is changed (Especially, in timeout change)

When watchdog option is changed by aw_control API, the changed option should be applied at the moment.
However, current self-thread watchdog does not change the option until previous timeout is expired.
This patch is to fix the bugs for self-thread watchdog.

This patch is the part of origin patch - http://slp-info.sec.samsung.net/gerrit/#/c/3321696/

cf) Version is changed from 0.0.1 to 0.0.3 because the version including "multiple types of watchdog" patch should have been 0.0.2.

Change-Id: I792c0ecee6419d7e605a4f92fa06932c9ca5d774