[flashrom-gerrit] Change in flashrom[master]: programmer: Introduce default shutdown function

[Joursoir (Code Review)]

Attention is currently required from: Nico Huber, Edward O'Callaghan, Angel Pons, Joursoir.
Joursoir has uploaded a new patch set (#6) to the change originally created by Anastasia Klimchuk. ( https://review.coreboot.org/c/flashrom/+/54890 )

Change subject: programmer: Introduce default shutdown function
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programmer: Introduce default shutdown function

Default shutdown function is only freeing master data (if data exists)
and not doing anything else.

There are five spi masters which can use default shutdown function
(all included in this patch), and a lot of par masters that can benefit
from it as well.

BUG=b:185191942
TEST=builds

Change-Id: I8b20717ba549e12edffbc5d1643ff064a4f0c517
Signed-off-by: Anastasia Klimchuk 
Signed-off-by: Alexander Goncharov 
---
M flashrom.c
M include/programmer.h
M mcp6x_spi.c
M nicintel_spi.c
M ogp_spi.c
M rayer_spi.c
M usbblaster_spi.c
7 files changed, 12 insertions(+), 35 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/90/54890/6