dt-bindings: pinctrl: qcom: Add sc8180x binding

Add binding for the TLMM block in the Qualcomm SC8180X platform.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210126042650.1725176-2-bjorn.andersson@linaro.org


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