arm64: dts: qcom: sm8450-hdk: add missing PMIC includes

Add includes for PMICs used on the SM8450-HDK. This makes GPIO blocks
and thermal sensors available to the user of the platform.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221217003349.546852-6-dmitry.baryshkov@linaro.org