arm64: dts: qcom: sa8775p: add PMIC GPIO controller nodes

Add GPIO controller nodes to PMICs that have the GPIO hooked up on
sa8775p-ride.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230327125316.210812-15-brgl@bgdev.pl