docs(security): update CVE-2024-7881 affected CPUs list

This patch updates the affected CPUs list to include the following
CPUs - C1-Premium, C1-Pro and C1-Ultra.

Signed-off-by: Arvind Ram Prakash <[email protected]>
Change-Id: Ia2cc39d0f91bab89a911e271cf83c788d71bb85c
1 file changed