[coreboot-gerrit] Change in coreboot[master]: docs: correct and rewrite documentation regarding n/c / unused pads

[Tim Wawrzynczak (Code Review)]

Attention is currently required from:  Felix Singer, Tim Crawford, Nico Huber, Matt DeVillier, Michael Niewöhner, Tim Wawrzynczak, Patrick Rudolph.
Tim Wawrzynczak has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/52139 )

Change subject: docs: correct and rewrite documentation regarding n/c / unused pads
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Patch Set 13: Code-Review+1

(2 comments)

Patchset:

PS13: 
Will let others look too

File Documentation/getting_started/gpio.md:

https://review.coreboot.org/c/coreboot/+/52139/comment/ca46068f_44117914 
PS13, Line 121: output, adding
> it's 1) setting their direction to output, (OR) 2) adding an external pull resistor or 2) configurin […]

Ah right, sorry Monday morning brain 😋