Change in coreboot[master]: soc/intel/apollolake: Allow overriding FSP_S settings by board

[build bot (Jenkins) (Code Review)]

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/21142 )

Change subject: soc/intel/apollolake: Allow overriding FSP_S settings by board
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Patch Set 1: Verified-1

Build Unstable

https://qa.coreboot.org/job/coreboot-gerrit/59036/ : UNSTABLE

https://qa.coreboot.org/job/coreboot-checkpatch/14374/ : SUCCESS