ARM: dts: qcom-msm8974*: Remove unnecessary include

gpio.h is already included in the SoC DTSI. Don't include it again.

Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220415115633.575010-24-konrad.dybcio@somainline.org