Introduce platform CPU info container for ARM. Use it for ACTLR.

[zbb]

Summary

This change allows for additional, platform-specific quirks
in the CPU configuration based on CPU info.
Add plat_cpuinfo to store any quirks or additional settings
to be applied by the platform code.
Use it to modify default ACTLR set-up if needed.

Submitted by: Zbigniew Bodek <[e-mail]>
Obtained from: Semihalf
Sponsored by: Stormshield

[mmel]

Otherwise, I'm fine with this.

sys/arm/arm/cpuinfo.c

248

Please, follow logic used in this function and use one variable for 'mask' and other for 'set'.

sys/arm/include/cpuinfo.h

129

Only minor nit - plat_cpuinfo doesn't looks like best name - what about:

struct cpuinfo_quirks {
        uint32_t actlr_mask;
        uint32_t actlr_set;
};

[zbb]

Will use environment variable.