arm64: update hulk_defconfig and syzkaller_defconfig

hulk inclusion
category: bugfix
bugzilla: 13794
CVE: NA

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Update hulk_defconfig and syzkaller_defconfig for watchdog
implementation method configuration.

Signed-off-by: Wei Li <liwei391@huawei.com>
Reviewed-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>