[M] Change in flashrom[master]: libflashrom: Add flags to skip unreadable and unwritable regions

[Nikolai Artemiev (Code Review)]

Attention is currently required from: Edward O'Callaghan, Angel Pons.

Hello build bot (Jenkins), Edward O'Callaghan,

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

https://review.coreboot.org/c/flashrom/+/70128

to look at the new patch set (#22).

Change subject: libflashrom: Add flags to skip unreadable and unwritable regions
......................................................................

libflashrom: Add flags to skip unreadable and unwritable regions

Add flags to allow libflashrom users to configure how operations that
include unreadable or unwritable regions should be behave.

If the flags are set to true, a read/write operation will just skip the
inaccessible region and will still be executed in other regions.

If the flags are set to false, the inaccessible region will cause the
entire operation to fail.

BUG=b:260440773
BRANCH=none
TEST=builds

Change-Id: I9b96fb04b863625d2c9f9a00b97c35b3ddb0871b
CoAuthored-by: Edward O'Callaghan 
Signed-off-by: Edward O'Callaghan 
Signed-off-by: Nikolai Artemiev 
---
M include/flash.h
M include/libflashrom.h
M libflashrom.c
3 files changed, 42 insertions(+), 9 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/28/70128/22