dt-bindings: pinctrl: qcom,sm8250: use common TLMM schema

Reference common Qualcomm TLMM pin controller schema, to bring common
properties, other pinctrl schemas and additional checks, like function
required only for GPIOs.

Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20221017230012.47878-13-krzysztof.kozlowski@linaro.org


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