dt-bindings: pinctrl: qcom-pmic-gpio: Add pm8150b support

Add support for the PM8150b GPIO support to the Qualcomm PMIC GPIO
binding.

Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20190814123512.6017-2-vkoul@kernel.org


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