Change in coreboot[master]: soc/intel/apollolake: Use RTC common code

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Change subject: soc/intel/apollolake: Use RTC common code
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Patch Set 3: Verified-1

Build Unstable

https://qa.coreboot.org/job/coreboot-gerrit/50984/ : UNSTABLE

https://qa.coreboot.org/job/coreboot-checkpatch/6952/ : SUCCESS