zephyr: shim: fix a typo
zephyr: shim: fix a typo

s/change/chance/

BRANCH=none
BUG=none
TEST=zmake testall

Signed-off-by: Fabio Baltieri <1c55e39c05d9ab42261288cf330256b2af6ba179@google.com>
Change-Id: Ifca54fd09d7380d6e1c6a04c2cf7dffe3b751279
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3661583
Reviewed-by: Jeremy Bettis <4df7b5147fee087dca33c181f288ee7dbf56e022@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec