watchdog: pretimeout: add userspace notifier pretimeout governor

Userspace notifier watchdog pretimeout governor, on watchdog
pretimeout event sends a notification to userspace for further
handling.

Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
4 files changed