drivers: versal: physical unclonable function

This driver uses the PLM xilpuf service to deliver the physical
unclonable function (PUF).

The Physical unclonable function (PUF) generates two device

drivers: versal: physical unclonable function

This driver uses the PLM xilpuf service to deliver the physical
unclonable function (PUF).

The Physical unclonable function (PUF) generates two device unique
signatures per die. One signature is used for the key encryption key
(KEK) and one signature is used as an unique identification value.

The Unique ID is fully accessible and its value can be cleared
(hidden) and regenerated.

The KEK is never accessible and only usable from the AES-GCM engine.

https://github.com/Xilinx/embeddedsw

[1] TRM: https://docs.xilinx.com/r/en-US/am011-versal-acap-trm

Signed-off-by: Jorge Ramirez-Ortiz <jorge@foundries.io>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

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