[AArch64] Add support for C1 CPUs (#171124)
This patch adds initial support for the Arm v9.3 C1 processors:
* C1-Nano
* C1-Pro
* C1-Premium
* C1-Ultra
For more information on each, see:
https://developer.arm.com/Processors/C1-Nano
https://developer.arm.com/Processors/C1-Pro
https://developer.arm.com/Processors/C1-Premium
https://developer.arm.com/Processors/C1-Ultra
Technical Reference Manual for C1-Nano:
https://developer.arm.com/documentation/107753/latest/
Technical Reference Manual for C1-Pro:
https://developer.arm.com/documentation/107771/latest/
Technical Reference Manual for C1-Premium:
https://developer.arm.com/documentation/109416/latest/
Technical Reference Manual for C1-Ultra:
https://developer.arm.com/documentation/108014/latest/
