watchdog: wdat_wdt: Fix missing kerneldoc reported by W=1

Fix the following warning while compiling with W=1.

drivers/watchdog/wdat_wdt.c:48: warning: Function parameter or member 'instructions' not described in 'wdat_wdt'
Signed-off-by: Wong Vee Khee <vee.khee.wong@intel.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20201111172205.17215-1-vee.khee.wong@intel.comSigned-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

drivers/watchdog/wdat_wdt.c

@@ -34,7 +34,7 @@ struct wdat_instruction {
  * @period: How long is one watchdog period in ms
  * @stopped_in_sleep: Is this watchdog stopped by the firmware in S1-S5
  * @stopped: Was the watchdog stopped by the driver in suspend
- * @actions: An array of instruction lists indexed by an action number from
+ * @instructions: An array of instruction lists indexed by an action number from
  *                the WDAT table. There can be %NULL entries for not implemented
  *                actions.
  */