[L] Change in flashrom[master]: drivers: Move (un)map_flash_region from programmer to par/spi_master

[Jonathon Hall (Code Review)]

Attention is currently required from: Thomas Heijligen, Edward O'Callaghan, Angel Pons, Nikolai Artemiev.

Jonathon Hall has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/67695 )

Change subject: drivers: Move (un)map_flash_region from programmer to par/spi_master
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Patch Set 7:

(1 comment)

File ichspi.c:

https://review.coreboot.org/c/flashrom/+/67695/comment/7c34af6b_cd17ffa9 
PS2, Line 1865: &mapper_phys
> Yep Angel said it very well. […]

Yep thank you all, I totally agree! I'm still getting the hang of the Gerrit workflow and what works best for review but I really appreciate all the help!

I will rebase this on those patches and split it up.  I think this will require temporarily adding a mapper to the opaque bus master that I then remove in a later patch, but that should be straightforward.