watchdog: Show error message when initr_watchdog() cannot start watchdog

Function wdt_start() may fail. So in initr_watchdog() function check return
value of wdt_start() call and print error message when watchdog starting
failed.

Signed-off-by: Pali Rohár <pali@kernel.org>
Reviewed-by: Stefan Roese <sr@denx.de>
1 file changed