platform/x86: ISST: Fix typo in comments

Fix spelling typo in comments.

Reported-by: k2ci <kernel-bot@kylinos.cn>
Signed-off-by: chen zhang <chenzhang@kylinos.cn>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20221103013313.13278-1-chenzhang@kylinos.cn


Signed-off-by: Hans de Goede <hdegoede@redhat.com>