[coreboot-gerrit] Change in coreboot[master]: spi: Add helper functions for bit-banging

[build bot (Jenkins) (Code Review)]

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/25394 )

Change subject: spi: Add helper functions for bit-banging
......................................................................

Patch Set 4: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-checkpatch/23697/ : SUCCESS

https://qa.coreboot.org/job/coreboot-gerrit/69375/ : SUCCESS