[coreboot] [flashrom]: AAI program supported?

[Bao, Zheng]

Hi, all,
I am trying to add AAI command support in flashrom. We know that some
chips support AAI while others don't. I want to add a member in struct
flashchip to indicate whether this chip support AAI. AAI programming
improves the speed of writing.

Does anyone give some advice? Do you guys think it makes sense?

Zheng