Support for ARM Peripheral Identification

[pengi]

Would be interesting to list information about CPU ID and peripherals.

There are several read only registers named PID0 to PID7 and CID0 to CID3

More information in B3.2.2 https://developer.arm.com/documentation/ddi0403/latest/

Addresses 0xE000EF3D0 to 0xE000EFFC