dt-bindings: pinctrl: qcom: Drop 'maxItems' on 'wakeup-parent'

'wakeup-parent' is a single phandle and not an array, so 'maxItems' is
wrong. Drop it.

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220519011210.170022-1-robh@kernel.org


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