arm64: dts: qcom: msm8996-xiaomi: align PMIC GPIO pin configuration with DT schema

Bindings expect PMIC GPIO pin configuration nodes to be named with
'-state' suffix:

  qcom/msm8996-xiaomi-scorpio.dtb: pmic@0: gpio@c000: 'irled-default', 'keypad-default' do not match any of the regexes: '-state$', 'pinctrl-[0-9]+'

Drop also additional indentation via "pinconf" to make the code a bit
smaller.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220908081050.29751-3-krzysztof.kozlowski@linaro.org