pinctrl: qcom-pmic-gpio: Add support for pmx55

PM55 pmic support gpio controller so add compatible and comment for gpio
holes

Signed-off-by: Vinod Koul <vkoul@kernel.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20201126092151.1082697-2-vkoul@kernel.org


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