2secdata_kernel: Fix debug messages BUG=none BRANCH=none TEST=Verified on Puff. Signed-off-by: dnojiri <dnojiri@chromium.org> Change-Id: I7e33abcf0832f83530e94cc37117c03fe164bbdb Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/2132716 Reviewed-by: Julius Werner <jwerner@chromium.org>