[coreboot-gerrit] Change in coreboot[master]: drivers/spi: add issi flash support

[Xiang Wang (Code Review)]

Hello Patrick Rudolph, build bot (Jenkins), Patrick Georgi, Martin Roth,

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

https://review.coreboot.org/c/coreboot/+/33059

to look at the new patch set (#9).

Change subject: drivers/spi: add issi flash support
......................................................................

drivers/spi: add issi flash support

HiFive Unleashed has a spi flash, add code to support

Change-Id: I35c81f7afd4c2c4a52730eeb15ce0b55d8d6af60
Signed-off-by: Xiang Wang 
---
M src/drivers/spi/Kconfig
M src/drivers/spi/Makefile.inc
A src/drivers/spi/issi.c
M src/drivers/spi/spi_flash_internal.h
4 files changed, 346 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/59/33059/9