[S] Change in flashrom[master]: ch347t_spi.c: Move ch347_device struct to flashctx

[Nicholas Chin (Code Review)]

Attention is currently required from: Angel Pons, Anastasia Klimchuk.

Nicholas Chin has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/71066 )

Change subject: ch347t_spi.c: Move ch347_device struct to flashctx
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Patch Set 1:

(1 comment)

Patchset:

PS1: 
I initially uploaded CB:70573 without realizing that CB:70429 had previously been uploaded by qianfan Zhao ("ch347" didn't turn up any results in Gerrit as Qianfan had used "ch347t", turns out you need to use a regex search to get a partial match of a word). This commit aims to take the major unique features of my original patch and rebase them on top of Qianfan's port.