dt-bindings: google,cros-ec-keyb: Fix spelling error

The dependency had an obvious spelling error. Fix it.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230220135531.1987351-1-linus.walleij@linaro.org


Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>