watchdog: hpwdt: Add support for WDIOC_SETOPTIONS

watchdog: hpwdt: Add support for WDIOC_SETOPTIONS

Orabug: 25505543

WDIOC_SETOPTIONS makes it possible to disable and re-enable the
watchdog timer while the hpwdt driver is loaded.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
(cherry picked from commit 46c80b20d07e9309677d81e1226dc30a055b63b7)
Signed-off-by: Somasundaram Krishnasamy <somasundaram.krishnasamy@oracle.com>
Reviewed-by: Jack Vogel <jack.vogel@oracle.com>