fix(cpus): workaround for CVE-2024-5660 for Cortex-X1

Implements mitigation for CVE-2024-5660 that affects Cortex-X1
revisions r0p0, r1p0, r1p1, r1p2.
The workaround is to disable the hardware page aggregation at
EL3 by setting CPUECTLR_EL1[46] = 1'b1.

Public Documentation:
https://developer.arm.com/Arm%20Security%20Center/Arm%20CPU%20Vulnerability%20CVE-2024-5660

Change-Id: I3124db3980f2786412369a010ca6abbbbaa3b601
Signed-off-by: Sona Mathew <sonarebecca.mathew@arm.com>
1 file changed