[M] Change in flashrom[main]: Fix FEATURE_NO_ERASE chips and add test for them

[Anastasia Klimchuk (Code Review)]

Hello build bot (Jenkins),

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

https://review.coreboot.org/c/flashrom/+/84203?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The following approvals got outdated and were removed: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: Fix FEATURE_NO_ERASE chips and add test for them
......................................................................

Fix FEATURE_NO_ERASE chips and add test for them

New check was added to `check_block_eraser` in
commit 0f389aea9e630c3b21547a5dd8dbe572a8502853 but it was not
handling FEATURE_NO_ERASE chips.

This patch fixes processing such chips and adds test to run
write and verify with dummyflasher for FEATURE_NO_ERASE chips.

Ticket: https://ticket.coreboot.org/issues/553

Change-Id: I582fe00da0715e9b5e92fcc9d15d5a90a2615117
Signed-off-by: Anastasia Klimchuk 
---
M flashrom.c
M tests/chip.c
M tests/tests.c
M tests/tests.h
4 files changed, 65 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/03/84203/3