Change in coreboot[master]: soc/amd: Fix most checkpatch errors

[build bot (Jenkins) (Code Review)]

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/19986 )

Change subject: soc/amd: Fix most checkpatch errors
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Patch Set 2: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-checkpatch/10313/ : SUCCESS

https://qa.coreboot.org/job/coreboot-gerrit/54599/ : SUCCESS