[coreboot-gerrit] Change in coreboot[master]: mb/intel/{galileo,wtm2}: Use macro instead of magic number

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Name of user not set #1002476 has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/33438 )

Change subject: mb/intel/{galileo,wtm2}: Use macro instead of magic number
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Patch Set 2: Code-Review+1

The same I did here previously: CB:35539
Please review it as well