dt-bindings: pinctrl: samsung: google,gs101-pinctrl needs a clock

The pin controller on Google Tensor gs101 requires a bus clock for
register access to work. Add it.

Signed-off-by: André Draszik <andre.draszik@linaro.org>
Link: https://lore.kernel.org/r/20240426-samsung-pinctrl-busclock-v3-1-adb8664b8a7e@linaro.org


Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>