arm64: dts: qcom: sm6375: Add GPI DMA nodes

Add nodes for GPI DMA hosts on SM6375.

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221115152727.9736-4-konrad.dybcio@linaro.org