Wolf: Add servo overlay.

Add servo overlay for wolf platform.

TEST=Confirm success of firmware_FAFTSetup on wolf.
BUG=None

Change-Id: I4e4e84cf70dbde642dbf85f7acd69cc78909bf48
Reviewed-on: https://gerrit.chromium.org/gerrit/66201
Reviewed-by: Shawn Nematbakhsh <shawnn@chromium.org>
Commit-Queue: Dave Parker <dparker@chromium.org>
Tested-by: Dave Parker <dparker@chromium.org>
1 file changed