[S] Change in flashrom[main]: buspirate_spi: Add support for hiz output with pullups=off

[David Reguera Garcia (Code Review)]

Attention is currently required from: Anastasia Klimchuk, Thomas Heijligen.

David Reguera Garcia has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/79299?usp=email )

Change subject: buspirate_spi: Add support for hiz output with pullups=off
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Patch Set 7:

(3 comments)

File doc/classic_cli_manpage.rst:

https://review.coreboot.org/c/flashrom/+/79299/comment/42d87e20_bf4fccf0 :
PS7, Line 765: 
             : When working with low-voltage chips, the internal 10k pull-ups of the Bus Pirate might be too high.
> Could you swap this new paragraph about `hiz` with existing about `pullups` param? […]

Done

https://review.coreboot.org/c/flashrom/+/79299/comment/a10b3b89_14549de5 :
PS7, Line 766:
> trailing whitespace, but you don't need a new line here, you can make new line after the end of sent […]

Done

https://review.coreboot.org/c/flashrom/+/79299/comment/1c67cb5e_ce190c3e :
PS7, Line 767:
> trailing whitespace

Done