[M] Change in flashrom[main]: ch347_spi: Add spi clock frequency selection

[Anastasia Klimchuk (Code Review)]

Attention is currently required from: Nicholas Chin, ZhiYuanNJ.

Anastasia Klimchuk has posted comments on this change by ZhiYuanNJ. ( https://review.coreboot.org/c/flashrom/+/82776?usp=email )

Change subject: ch347_spi: Add spi clock frequency selection
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Patch Set 13:

(1 comment)

File ch347_spi.c:

https://review.coreboot.org/c/flashrom/+/82776/comment/569b29f9_5a4fc5fc?usp... :
PS11, Line 291: speed_index = 1;
But you haven't done? :)

What I meant is that you don't need `int divisor` at all. You can initialise
> int speed_index = 2; /* default 15M SPI */

and then always use `spispeeds[speed_index].divisor`
You won't have `int divisor` at all.