Change in coreboot[master]: drivers/mrc_cache: Make bootstate for SPI writes variable

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Change subject: drivers/mrc_cache: Make bootstate for SPI writes variable
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Patch Set 2: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-checkpatch/19599/ : SUCCESS

https://qa.coreboot.org/job/coreboot-gerrit/64822/ : SUCCESS