[coreboot-gerrit] Change in coreboot[master]: soc/intel/cannonlake: add *spi.c files to make

[build bot (Jenkins) (Code Review)]

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/21284 )

Change subject: soc/intel/cannonlake: add *spi.c files to make
......................................................................

Patch Set 2:

Build Successful

https://qa.coreboot.org/job/coreboot-checkpatch/14947/ : SUCCESS

https://qa.coreboot.org/job/coreboot-gerrit/59672/ : SUCCESS