Change in coreboot[master]: google/gru: Correct the Sdcard control gpio setting for Scarlet

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Change subject: google/gru: Correct the Sdcard control gpio setting for Scarlet
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Patch Set 3: Verified+1

Build Successful

https://qa.coreboot.org/job/coreboot-gerrit/58053/ : SUCCESS

https://qa.coreboot.org/job/coreboot-checkpatch/13486/ : SUCCESS