dt-bindings: pinctrl: qcom,sc7280: add bias-bus-hold and input-enable

The SC7280 pinctrl driver supports bias-bus-hold and input-enable, and
DTS already use it (sc7280-idp).

Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221016172212.49105-17-krzysztof.kozlowski@linaro.org


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