arm64: dts: qcom: sdm845: Fill in GENI DMA references

The I2C and SPI might be configured in GPI DMA mode, fill in the
properties needed for this.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20220717034403.2135027-2-bjorn.andersson@linaro.org