fix(security): add CVE-2024-7881 mitigation to Cortex-X3

This patch mitigates CVE-2024-7881 [1] by setting CPUACTLR6_EL1[41] to 1
for Cortex-X3 CPU.

[1]: https://developer.arm.com/Arm%20Security%20Center/Arm%20CPU%20Vulnerability%20CVE-2024-7881

Signed-off-by: Arvind Ram Prakash <arvind.ramprakash@arm.com>
Change-Id: I410517d175a80fc6f459fa6ce5c30c0a38db9eaf
1 file changed