[M] Change in flashrom[master]: tree/: Move programmer_delay() out of programmer state machine

[Nico Huber (Code Review)]

Attention is currently required from: Felix Singer, Edward O'Callaghan.

Nico Huber has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/67393 )

Change subject: tree/: Move programmer_delay() out of programmer state machine
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Patch Set 4:

(2 comments)

File flashrom.c:

https://review.coreboot.org/c/flashrom/+/67393/comment/572cae45_5610fe35 
PS4, Line 219: flash->mst->buses_supported & BUS_SPI
> In case of multiple buses, this is not necessarily the bus that the flash […]

Nevermind, I was thinking about a different variable. This
one used to be the tag of a tagged union. So we could write
`==` for clarity. (of course returning to a union would help
readers a lot; the name also shouldn't be plural if it only
supports a single bus)

https://review.coreboot.org/c/flashrom/+/67393/comment/f5e58086_729018a0 
PS4, Line 224: 			flash->mst->par.delay(usecs);
> This could probably be better solved by having a common master struct, […]

Actually, if there will be common information to store, we could
place it inside `registered_master`.