[L] Change in flashrom[master]: doc: add information about contributing patches

[Peter Marheine (Code Review)]

Attention is currently required from: Thomas Heijligen, Peter Marheine.

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

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

https://review.coreboot.org/c/flashrom/+/74923

to look at the new patch set (#3).

Change subject: doc: add information about contributing patches
......................................................................

doc: add information about contributing patches

This is copied from the "Development Guidelines" page on the wiki, with
some unimportant historical bits removed (description of old branch
names that are no longer meaningful) and notes on adding flash chips
moved to a new page. Sections are also reordered to (hopefully) more
closely match the order in which prospective contributors will care
about them.

Change-Id: I12c5fac99f1dc9c05e3dd4d5554e937a57f64d6f
Signed-off-by: Peter Marheine 
---
M doc/contact.rst
A doc/dev_guide/contributing.rst
M doc/dev_guide/index.rst
A doc/dev_guide/new_chips.rst
4 files changed, 438 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/23/74923/3