dt-bindings: pinctrl: qcom,sc8280xp-tlmm: allow 'bias-bus-hold'

The controller supports 'bias-bus-hold' so add it to the binding.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20230316105800.18751-1-johan+linaro@kernel.org


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