[AArch64] Add support for Cortex-A520AE and Cortex-A720AE CPUs (#85401)

[AArch64] Add support for Cortex-A520AE and Cortex-A720AE CPUs

Cortex-A520AE and Cortex-A720AE are Armv9.2 AArch64 CPUs.

Technical Reference Manual for Cortex-A520AE:
   https://developer.arm.com/documentation/107726/latest/

Technical Reference Manual for Cortex-A720AE:
   https://developer.arm.com/documentation/102828/latest/