Change in coreboot[master]: device/dram/ddr2: Add a function to normalize tCLK

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Change subject: device/dram/ddr2: Add a function to normalize tCLK
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Patch Set 34: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-checkpatch/10584/ : SUCCESS

https://qa.coreboot.org/job/coreboot-gerrit/54885/ : SUCCESS