dt-bindings: pinctrl: qcom: Add SM8550 pinctrl

Add device tree binding Documentation details for Qualcomm SM8550
TLMM device

Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221230203637.2539900-2-abel.vesa@linaro.org


Signed-off-by: Linus Walleij <linus.walleij@linaro.org>