[M] Change in flashrom[main]: erase_func_algo: Avoid putting 0xff into buffers

[Hsuan-ting Chen (Code Review)]

Attention is currently required from: Anastasia Klimchuk.

Hsuan-ting Chen has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/79229?usp=email )

Change subject: erase_func_algo: Avoid putting 0xff into buffers
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Patch Set 1:

(1 comment)

Patchset:

PS1:
> Hsuan-ting, I appreciate your effort to create a patch, but I don't understand what is the issue you […]

Hi Anastasia:

Here's my previous note: 
https://review.coreboot.org/c/flashrom/+/67535/comment/5f7ed5b9_3f1e6037/

Thanks for the prompt reply. Yes, I think I am  not really clear about this test.

I am not very clear about the "golden example" should be. For example,
```
.initial_buf = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
                0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff},
.written_buf = {0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 
                0x9, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf},
```

Should we erase all or should we aware that the initial buf is already 0xFFs so skip erasure?

Please let me know if there's anything I need to study or misunderstood.