[S] Change in flashrom[main]: flashchips: Add GD25LQ255E

[Tyler Wang (Code Review)]

Attention is currently required from: Anastasia Klimchuk, David Wu, Kapil Porwal, Maximilian Brune, Nikolai Artemiev, Subrata Banik.

Tyler Wang has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/79088?usp=email )

Change subject: flashchips: Add GD25LQ255E
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Patch Set 9:

(1 comment)

File flashchips.c:

https://review.coreboot.org/c/flashrom/+/79088/comment/b3fed484_bbc55af6 :
PS9, Line 6559: FEATURE_WRSR_EXT2
> Also for my education: how do I find out from datasheet that FEATURE_WRSR_EXT2 is supported? Thank y […]

Umm.. I was refer to funciton spi_prepare_wrsr_ext():
```
/*
 * Writing SR2 or higher with an extended WRSR command requires
 * writing all lower SRx along with it, so just read the lower
 * SRx and write them back.
 */
```
If it has SR2(or higher), FEATURE_WRSR_EXT2 is needed.
But after check the code again, I think my opinion is incorrect.
Do you know how to check FEATURE_WRSR_EXT2 is supported?