Change in coreboot[master]: arch/x86: Helper functions to get deterministic cache parameters

[Tim Wawrzynczak (Code Review)]

Attention is currently required from: Furquan Shaikh, Rizwan Qureshi, Subrata Banik, Angel Pons, Patrick Rudolph.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/55965 )

Change subject: arch/x86: Helper functions to get deterministic cache parameters
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Patch Set 7:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/55965/comment/3bf4da42_76fb2927 
PS7, Line 20: cahce
cache

Patchset:

PS7: 
Why bother with caching the results of this CPUID call?

Why not something like:
```
bool get_cpu_cache_info(uint8_t level, struct cpu_cache_info *info)
{
    if (!info)
             return false;

uint32_t leaf = cpu_get_cache_info_leaf();
    if (!leaf)
    return;

struct cpuid_result result = cpuid_ext(leaf, level);
    info->type = cpu_get_cache_type(result);
    info->level = cpu_get_cache_level(result);
    info->.......
}
```

then the other functions are more like:
```
size_t cache_size(const struct cpu_cache_info *info)
{
     	return info->num_ways * info->physical_partitions *
    		info->line_size * info->num_sets;
}
```