Support watchdog timer
To enable/disable the watchdog timer, appcore uses aul watchdog APIs.
appcore watchdog APIs are added for application developers.
Adds:
- appcore_watchdog_enable()
- appcore_watchdog_disable()
- appcore_watchdog_kick()
Requires:
- https://review.tizen.org/gerrit/#/c/185276/ [aul-1]
- https://review.tizen.org/gerrit/#/c/185882/ [app-core]
- https://review.tizen.org/gerrit/#/c/185884/ [amd]
- https://review.tizen.org/gerrit/#/c/186247/ [app-common]
Change-Id: I1fc869aed8d54ed473f210eb81d95d25d67a0842
Signed-off-by: Hwankyu Jhun <h.jhun@samsung.com>