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

[Dreg (Code Review)]

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

Hello Anastasia Klimchuk, Thomas Heijligen, build bot (Jenkins),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/flashrom/+/79299?usp=email

to look at the new patch set (#2).

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

When working with low-voltage chips, the internal 10k pull-ups of the Bus Pirate might be too high. In such cases, it's necessary to create an external pull-up using lower-value resistors. For this, you can use the ``hiz`` parameter.  This way, the Bus Pirate will operate as an open drain

Change-Id: I6d9909b23782ef3fcb1428fd127dae0d6b211855
Signed-off-by: David Reguera Garcia 
---
M buspirate_spi.c
M doc/classic_cli_manpage.rst
2 files changed, 22 insertions(+), 2 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/99/79299/2