mfd: cros_ec: Update cros_ec_commands.h

Update cros_ec_commands.h to match the fingerprint MCU section in
the current ec_commands.h

Signed-off-by: Yicheng Li <yichengli@chromium.org>
Reviewed-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>