Change in coreboot[master]: soc/amd/stoneyridge: clean up southbridge.c

[build bot (Jenkins) (Code Review)]

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/25010 )

Change subject: soc/amd/stoneyridge: clean up southbridge.c
......................................................................

Patch Set 2: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-checkpatch/22756/ : SUCCESS

https://qa.coreboot.org/job/coreboot-gerrit/68320/ : SUCCESS