[S] Change in flashrom[main]: dummyflasher: Enable higher frequency emulation, add docs and tests

[Anastasia Klimchuk (Code Review)]

Attention is currently required from: Anastasia Klimchuk.

Hello Sergii Dmytruk, build bot (Jenkins),

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

https://review.coreboot.org/c/flashrom/+/84423?usp=email

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

The following approvals got outdated and were removed:
Verified+1 by build bot (Jenkins)

Change subject: dummyflasher: Enable higher frequency emulation, add docs and tests
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dummyflasher: Enable higher frequency emulation, add docs and tests

The patch adds a section on a manpage to explain the freq
parameter in dummyflasher, and tests for various valid and invalid
values of freq parameter.

Co-developed-by: Anastasia Klimchuk 
Co-developed-by: Sergii Dmytruk 
Change-Id: Iaca5d95f8f977bf0c2283c6458d8977e6ce70251
Signed-off-by: Anastasia Klimchuk 
---
M doc/classic_cli_manpage.rst
M dummyflasher.c
M tests/dummyflasher.c
M tests/tests.c
M tests/tests.h
5 files changed, 41 insertions(+), 7 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/23/84423/3